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  • 51.
    Abdalla, H.
    et al.
    Univ Namibia, Namibia.
    Aharonian, F.
    Dublin Inst Adv Studies, Ireland;Max Planck Inst Kernphys, Germany;RAU, Armenia.
    Benkhali, F. Ait
    Max Planck Inst Kernphys, Germany.
    Anguner, E. O.
    Aix Marseille Univ, France.
    Armand, C.
    Univ Savoie Mt Blanc, France.
    Ashkar, H.
    Univ Paris Saclay, France.
    Backes, M.
    Univ Namibia, Namibia;North West Univ, South Africa.
    Baghmanyan, V
    Inst Fizyki Jadrowej PAN, Poland.
    Martins, V. Barbosa
    DESY, Germany.
    Batzofin, R.
    Univ Witwatersrand, South Africa.
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Berge, D.
    DESY, Germany.
    Bernlohr, K.
    Max Planck Inst Kernphys, Germany.
    Bi, B.
    Univ Tubingen, Germany.
    Bottcher, M.
    North West Univ, South Africa.
    Bolmont, J.
    Sorbonne Universite,, France.
    de Lavergne, M. de Bony
    Univ Savoie Mt Blanc, France.
    Brose, R.
    Dublin Inst Adv Studies, Ireland.
    Brun, F.
    Univ Paris Saclay, France.
    Cangemi, F.
    Sorbonne Univ, France.
    Caroff, S.
    Sorbonne Univ, France.
    Cerruti, M.
    Univ Paris, France.
    Chand, T.
    North West Univ, South Africa.
    Chen, A.
    Univ Witwatersrand, South Africa.
    Cotter, G.
    Univ Oxford, UK.
    Mbarubucyeye, J. Damascene
    DESY, Germany.
    Devin, J.
    Univ Bordeaux, France.
    Djannati-Atai, A.
    Univ Paris, France.
    Dmytriiev, A.
    Univ Paris, France.
    Doroshenko, V
    Univ Tubingen, Germany.
    Egberts, K.
    Univ Potsdam, Germany.
    Fiasson, A.
    Univ Savoie Mt Blanc, France.
    de Clairfontaine, G. Fichet
    Univ Paris, France.
    Fontaine, G.
    Ecole Polytech, France.
    Funk, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Gabici, S.
    Univ Paris, France.
    Giavitto, G.
    DESY, Germany.
    Glawion, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Glicenstein, J. F.
    Univ Paris Saclay, France.
    Grondin, M-H
    Univ Bordeaux, France.
    Hinton, J. A.
    Max Planck Inst Kernphys, Germany.
    Hofmann, W.
    Max Planck Inst Kernphys, Germany.
    Holch, T. L.
    DESY, Germany.
    Holler, M.
    Leopold Franzens Univ Innsbruck, Austria.
    Horns, D.
    Univ Hamburg, Germany.
    Huang, Zhiqiu
    Max Planck Inst Kernphys, Germany.
    Jamrozy, M.
    Uniwersytet Jagiellonski, Poland.
    Jankowsky, F.
    Heidelberg Univ, Germany.
    Kasai, E.
    Univ Namibia, Namibia.
    Katarzynski, K.
    Nicolaus Copernicus Univ, Poland.
    Katz, U.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Khelifi, B.
    Univ Paris, France.
    Komin, Nu
    Univ Witwatersrand, South Africa.
    Kosack, K.
    Univ Paris Saclay, France.
    Kostunin, D.
    DESY, Germany.
    Lamanna, G.
    Univ Savoie Mt Blanc, France.
    Lemoine-Goumard, M.
    Univ Bordeaux, France.
    Lenain, J-P
    Sorbonne Univ, France.
    Leuschner, F.
    Univ Tubingen, Germany.
    Lohse, T.
    Humboldt Univ, Germany.
    Luashvili, A.
    Univ Paris, France.
    Lypova, I
    Heidelberg Univ, Germany.
    Mackey, J.
    Dublin Inst Adv Studies, Ireland.
    Malyshev, D.
    Univ Tubingen, Germany;Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Marandon, V
    Max Planck Inst Kernphys, Germany.
    Marchegiani, P.
    Univ Witwatersrand, South Africa.
    Marti-Devesa, G.
    Leopold Franzens Univ Innsbruck, Austria.
    Marx, R.
    Heidelberg Univ, Germany.
    Maurin, G.
    Univ Savoie Mt Blanc, France.
    Meyer, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Mitchell, A.
    Max Planck Inst Kernphys, Germany.
    Moderski, R.
    Polish Acad Sci, Poland.
    Montanari, A.
    Univ Paris Saclay, France.
    Moulin, E.
    Univ Paris Saclay, France.
    Muller, J.
    Ecole Polytech, France.
    de Naurois, M.
    Ecole Polytech, France.
    Niemiec, J.
    Inst Fizyki Jadrowej PAN, Poland.
    Noel, A. Priyana
    Uniwersytet Jagiellonski, Poland.
    Ohm, S.
    DESY, Germany.
    Olivera-Nieto, L.
    Max Planck Inst Kernphys, Germany.
    Wilhelmi, E. de Ona
    DESY, Germany.
    Ostrowski, M.
    Uniwersytet Jagiellonski, Poland.
    Panny, S.
    Leopold Franzens Univ Innsbruck, Austria.
    Panter, M.
    Max Planck Inst Kernphys, Germany.
    Parsons, R. D.
    Humboldt Univ, Germany.
    Peron, G.
    Max Planck Inst Kernphys, Germany.
    Poireau, V
    Univ Savoie Mt Blanc, France.
    Prokoph, H.
    DESY, Germany.
    Puehlhofer, G.
    Univ Tubingen, Germany.
    Punch, Michael
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Paris, France.
    Quirrenbach, A.
    Heidelberg Univ, Germany.
    Reichherzer, P.
    Univ Paris Saclay, France.
    Reimer, A.
    Leopold Franzens Univ Innsbruck, Austria.
    Reimer, O.
    Leopold Franzens Univ Innsbruck, Austria.
    Renaud, M.
    Univ Montpellier, France.
    Rieger, F.
    Max Planck Inst Kernphys, Germany.
    Rowell, G.
    Univ Adelaide, Australia.
    Rudak, B.
    Polish Acad Sci, Poland.
    Ricarte, H. Rueda
    Univ Paris Saclay, France.
    Ruiz-Velasco, E.
    Max Planck Inst Kernphys, Germany.
    Sahakian, V
    Yerevan Phys Inst, Armenia.
    Salzmann, H.
    Univ Tubingen, Germany.
    Santangelo, A.
    Univ Tubingen, Germany.
    Sasaki, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Schussler, F.
    Univ Paris Saclay, France.
    Schutte, H. M.
    North West Univ, South Africa.
    Schwanke, U.
    Humboldt Univ, Germany.
    Senniappan, Mohanraj
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Shapopi, J. N. S.
    Univ Namibia, Namibia.
    Sol, H.
    Univ Paris, France.
    Specovius, A.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Stegmann, C.
    DESY, Germany;Univ Potsdam, Germany.
    Steinmassl, S.
    Max Planck Inst Kernphys, Germany.
    Steppa, C.
    Univ Potsdam, Germany.
    Takahashi, T.
    Univ Tokyo, Japan.
    Tanaka, T.
    Konan Univ, Japan.
    Terrier, R.
    Univ Paris, France.
    Thorpe-Morgan, C.
    Univ Tubingen, Germany.
    Tluczykont, M.
    Univ Hamburg, Germany.
    Tsirou, M.
    Max Planck Inst Kernphys, Germany.
    Tsuji, N.
    RIKEN, Japan.
    Uchiyama, Y.
    Rikkyo Univ, Japan.
    van Eldik, C.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Veh, J.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Vink, J.
    Univ Amsterdam, Netherlands.
    Wagner, S. J.
    Universität Heidelberg, Germany.
    White, R.
    Max Planck Inst Kernphys, Germany.
    Wierzcholska, A.
    Inst Fizyki Jadrowej PAN, Poland.
    Wong, Yu Wun
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Zacharias, M.
    Univ Paris, France.
    Zargaryan, D.
    Dublin Inst Adv Studies, Ireland;RAU, Armenia.
    Zdziarski, A. A.
    Polish Acad Sci, Poland.
    Zech, A.
    Univ Paris, France.
    Zhu, S. J.
    DESY, Germany.
    Zouari, S.
    Univ Paris, France.
    Zywucka, N.
    North West Univ, South Africa.
    Search for Dark Matter Annihilation Signals in the HESS Inner Galaxy Survey2022In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 129, no 11, article id 111101Article in journal (Refereed)
    Abstract [en]

    The central region of the Milky Way is one of the foremost locations to look for dark matter (DM) signatures. We report the first results on a search for DM particle annihilation signals using new observations from an unprecedented gamma-ray survey of the Galactic Center (GC) region, i.e., the Inner Galaxy Survey, at very high energies (& GSIM;100 GeV) performed with the H.E.S.S. array of five ground-based Cherenkov telescopes. No significant gamma-ray excess is found in the search region of the 2014-2020 dataset and a profile likelihood ratio analysis is carried out to set exclusion limits on the annihilation cross section (sigma v). Assuming Einasto and Navarro-Frenk-White (NFW) DM density profiles at the GC, these constraints are the strongest obtained so far in the TeV DM mass range. For the Einasto profile, the constraints reach (sigma v) values of 3.7 x 10-26 cm3 s-1 for 1.5 TeV DM mass in the W+W- annihilation channel, and 1.2 x 10-26 cm3 s-1 for 0.7 TeV DM mass in the tau+tau- annihilation channel. With the H.E.S.S. Inner Galaxy Survey, ground-based gamma-ray observations thus probe (sigma v) values expected from thermal-relic annihilating TeV DM particles.

  • 52.
    Abdalla, H.
    et al.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek 10005, Namibia..
    Aharonian, F.
    Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland.;Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;RAU, High Energy Astrophys Lab, 123 Hovsep Emin St, Yerevan 0051, Armenia..
    Benkhali, F. Ait
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Anguner, E. O.
    Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France..
    Ashkar, H.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Backes, M.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek 10005, Namibia.;North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Baghmanyan, V
    Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Martins, V. Barbosa
    DESY, D-15738 Zeuthen, Germany..
    Batzofin, R.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Berge, D.
    DESY, D-15738 Zeuthen, Germany..
    Bernlohr, K.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Bi, B.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Bottcher, M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Boisson, C.
    Univ Paris, Univ PSL, Observ Paris, Lab Univers & Theories,CNRS, F-92190 Meudon, France..
    Bolmont, J.
    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS IN2P3,Lab Phys Nucl & Hautes Energies,LPNHE, 4 Pl Jussieu, F-75252 Paris, France..
    de Lavergne, M. de Bony
    Univ Savoie Mt Blanc, Lab Annecy Phys Particules, CNRS, IN2P3, F-74000 Annecy, France..
    Brose, R.
    Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland..
    Brun, F.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Bulik, T.
    Univ Warsaw, Astron Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland..
    Bylund, Tomas
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Cangemi, F.
    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS IN2P3,Lab Phys Nucl & Hautes Energies,LPNHE, 4 Pl Jussieu, F-75252 Paris, France..
    Caroff, S.
    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS IN2P3,Lab Phys Nucl & Hautes Energies,LPNHE, 4 Pl Jussieu, F-75252 Paris, France..
    Casanova, S.
    Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Chand, T.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Chen, A.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Cotter, G.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
    Mbarubucyeye, J. Damascene
    DESY, D-15738 Zeuthen, Germany..
    Devin, J.
    Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, CNRS IN2P3, F-33175 Gradignan, France..
    Djannati-Atai, A.
    Univ Paris, Astroparticule & Cosmol, CNRS, F-75013 Paris, France..
    Egberts, K.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Ernenwein, J-P
    Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France..
    Fegan, S.
    Ecole Polytech, Lab Leprince Ringuet, CNRS, Inst Polytech Paris, F-91128 Palaiseau, France..
    Fiasson, A.
    Univ Savoie Mt Blanc, Lab Annecy Phys Particules, CNRS, IN2P3, F-74000 Annecy, France..
    de Clairfontaine, G. Fichet
    Univ Paris, Univ PSL, Observ Paris, Lab Univers & Theories,CNRS, F-92190 Meudon, France..
    Fontaine, G.
    Ecole Polytech, Lab Leprince Ringuet, CNRS, Inst Polytech Paris, F-91128 Palaiseau, France..
    Funk, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Gabici, S.
    Univ Paris, Astroparticule & Cosmol, CNRS, F-75013 Paris, France..
    Giavitto, G.
    DESY, D-15738 Zeuthen, Germany..
    Giunti, L.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France.;Univ Paris, Astroparticule & Cosmol, CNRS, F-75013 Paris, France..
    Glawion, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Glicenstein, J. F.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Grondin, M-H
    Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, CNRS IN2P3, F-33175 Gradignan, France..
    Hinton, J. A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Horbe, M.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
    Hofmann, W.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Holch, T. L.
    DESY, D-15738 Zeuthen, Germany..
    Holler, M.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Huang, Zhiqiu
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Huber, D.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Jamrozy, M.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Jankowsky, F.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Jung-Richardt, I
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Kasai, E.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek 10005, Namibia..
    Katarzynski, K.
    Nicolaus Copernicus Univ, Fac Phys Astron & Informat, Inst Astron, Grudziadzka 5, PL-87100 Torun, Poland..
    Katz, U.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Khelifi, B.
    Univ Paris, Astroparticule & Cosmol, CNRS, F-75013 Paris, France..
    Komin, Nu
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Konno, R.
    DESY, D-15738 Zeuthen, Germany..
    Kosack, K.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Kostunin, D.
    DESY, D-15738 Zeuthen, Germany..
    Kundu, A.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Lamanna, G.
    Univ Savoie Mt Blanc, Lab Annecy Phys Particules, CNRS, IN2P3, F-74000 Annecy, France..
    Le Stum, S.
    Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France..
    Lemiere, A.
    Univ Paris, Astroparticule & Cosmol, CNRS, F-75013 Paris, France..
    Lemoine-Goumard, M.
    Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, CNRS IN2P3, F-33175 Gradignan, France..
    Lenain, J-P
    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS IN2P3,Lab Phys Nucl & Hautes Energies,LPNHE, 4 Pl Jussieu, F-75252 Paris, France..
    Leuschner, F.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Lohse, T.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Luashvili, A.
    Univ Paris, Univ PSL, Observ Paris, Lab Univers & Theories,CNRS, F-92190 Meudon, France..
    Lypova, I
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Mackey, J.
    Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland..
    Majumdar, J.
    DESY, D-15738 Zeuthen, Germany..
    Malyshev, D.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Marandon, V
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Marchegiani, P.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Marti-Devesa, G.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Marx, R.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Maurin, G.
    Univ Savoie Mt Blanc, Lab Annecy Phys Particules, CNRS, IN2P3, F-74000 Annecy, France..
    Meintjes, P. J.
    Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa..
    Mitchell, A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Mohrmann, L.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Montanari, A.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Moulin, E.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Muller, J.
    Ecole Polytech, Lab Leprince Ringuet, CNRS, Inst Polytech Paris, F-91128 Palaiseau, France..
    Murach, T.
    DESY, D-15738 Zeuthen, Germany..
    de Naurois, M.
    Ecole Polytech, Lab Leprince Ringuet, CNRS, Inst Polytech Paris, F-91128 Palaiseau, France..
    Nayerhoda, A.
    Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Niemiec, J.
    Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Noel, A. Priyana
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    O'Brien, P.
    Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England..
    Ohm, S.
    DESY, D-15738 Zeuthen, Germany..
    Olivera-Nieto, L.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Wilhelmi, E. de Ona
    DESY, D-15738 Zeuthen, Germany..
    Ostrowski, M.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Panter, M.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Parsons, R. D.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Peron, G.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Poireau, V
    Univ Savoie Mt Blanc, Lab Annecy Phys Particules, CNRS, IN2P3, F-74000 Annecy, France..
    Prokhorov, D. A.
    Univ Amsterdam, Anton Pannekoek Inst Astron, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Prokoph, H.
    DESY, D-15738 Zeuthen, Germany..
    Puhlhofer, G.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Punch, Michael
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Paris, France.
    Quirrenbach, A.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Reichherzer, P.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Renaud, M.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Rieger, F.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Rowell, G.
    Univ Adelaide, Sch Phys Sci, Adelaide, SA 5005, Australia..
    Rudak, B.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Ricarte, H. Rueda
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Ruiz-Velasco, E.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Sahakian, V
    Yerevan Phys Inst, 2 Alikhanian Bros St, Yerevan 375036, Armenia..
    Sailer, S.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Salzmann, H.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Sanchez, D. A.
    Univ Savoie Mt Blanc, Lab Annecy Phys Particules, CNRS, IN2P3, F-74000 Annecy, France..
    Santangelo, A.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Sasaki, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Schussler, F.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Schutte, H. M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Schwanke, U.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Senniappan, Mohanraj
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Shapopi, J. N. S.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek 10005, Namibia..
    Sinha, A.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Sol, H.
    Univ Paris, Univ PSL, Observ Paris, Lab Univers & Theories,CNRS, F-92190 Meudon, France..
    Specovius, A.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Spencer, S.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
    Stawarz, L.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Steinmassl, S.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Steppa, C.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Sun, L.
    Univ Amsterdam, Anton Pannekoek Inst Astron, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Takahashi, T.
    Univ Tokyo, Univ Tokyo Inst Adv Study UTIAS, Kavli Inst Phys & Math Universe WPI, 5-1-5 Kashiwa No Ha, Kashiwa, Chiba 2778583, Japan..
    Tanaka, T.
    Konan Univ, Dept Phys, Higashinada Ku, 8-9-1 Okamoto, Kobe, Hyogo 6588501, Japan..
    Terrier, R.
    Univ Paris, Astroparticule & Cosmol, CNRS, F-75013 Paris, France..
    Thorpe-Morgan, C.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Tsirou, M.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Tsuji, N.
    RIKEN, 2-1 Hirosawa, Wako, Saitama 3510198, Japan..
    Uchiyama, Y.
    Rikkyo Univ, Dept Phys, Toshima Ku, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    van Eldik, C.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
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    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Vink, J.
    Univ Amsterdam, Anton Pannekoek Inst Astron, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Wagner, S. J.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Werner, F.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    White, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Wierzcholska, A.
    Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Wong, Yu Wun
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Zacharias, M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.;Univ Paris, Univ PSL, Observ Paris, Lab Univers & Theories,CNRS, F-92190 Meudon, France..
    Zargaryan, D.
    Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland.;RAU, High Energy Astrophys Lab, 123 Hovsep Emin St, Yerevan 0051, Armenia..
    Zdziarski, A. A.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Zech, A.
    Univ Paris, Univ PSL, Observ Paris, Lab Univers & Theories,CNRS, F-92190 Meudon, France..
    Zhu, S. J.
    DESY, D-15738 Zeuthen, Germany..
    Zouari, S.
    Univ Paris, Astroparticule & Cosmol, CNRS, F-75013 Paris, France..
    H.E.S.S. Follow-up Observations of Binary Black Hole Coalescence Events during the Second and Third Gravitational-wave Observing Runs of Advanced LIGO and Advanced Virgo2021In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 923, no 1, article id 109Article in journal (Refereed)
    Abstract [en]

    We report on the observations of four well-localized binary black hole (BBH) mergers by the High Energy Stereoscopic System (H.E.S.S.) during the second and third observing runs of Advanced LIGO and Advanced Virgo, O2 and O3. H.E.S.S. can observe 20 deg(2) of the sky at a time and follows up gravitational-wave (GW) events by "tiling" localization regions to maximize the covered localization probability. During O2 and O3, H.E.S.S. observed large portions of the localization regions, between 35% and 75%, for four BBH mergers (GW170814, GW190512_180714, GW190728_064510, and S200224ca). For these four GW events, we find no significant signal from a pointlike source in any of the observations, and we set upper limits on the very high energy (>100 GeV) gamma-ray emission. The 1-10 TeV isotropic luminosity of these GW events is below 10(45) erg s(-1) at the times of the H.E.S.S. observations, around the level of the low-luminosity GRB 190829A. Assuming no changes are made to how follow-up observations are conducted, H.E.S.S. can expect to observe over 60 GW events per year in the fourth GW observing run, O4, of which eight would be observable with minimal latency.

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    Max Planck Inst Kernphys, Germany.
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    Natl Acad Sci Republ Armenia, Armenia ; Yerevan Phys Inst, Armenia.
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    Humboldt Univ, Germany.
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    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
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    Ruhr Univ Bochum, Germany.
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    Univ Amsterdam, Netherlands ; Univ Amsterdam, Netherlands.
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    Leopold Franzens Univ Innsbruck, Austria.
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    Humboldt Univ, Germany.
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    Humboldt Univ, Germany.
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    Univ Adelaide, Australia.
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    North West Univ, South Africa.
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    PSL Res Univ, Univ Paris Diderot, CNRS, Observ Paris,LUTH, 5 Pl Jules Janssen, F-92190 Meudon, France..
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    Univ Paris 06, LPNHE, Univ Denis Diderot Paris 7, CNRS,IN2P3, 4 Pl Jussieu, F-75252 Paris 5, France..
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    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
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    Univ Montpellier 2, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
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    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
    Brun, P.
    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
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    Univ Amsterdam, Astron Inst Anton Pannekoek, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
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    Univ Warsaw, Astron Observ, Aleje Ujazdowskie 4, PL-00478 Warsaw, Poland..
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    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
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    Aix Marseille Univ, CNRS, IN2P3, CPPM UMR 7346, F-13288 Marseille, France..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Univ Paris 06, LPNHE, Univ Denis Diderot Paris 7, CNRS,IN2P3, 4 Pl Jussieu, F-75252 Paris 5, France..
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    Univ Montpellier 2, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
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    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
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    Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France..
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    Univ Paris 06, LPNHE, Univ Denis Diderot Paris 7, CNRS,IN2P3, 4 Pl Jussieu, F-75252 Paris 5, France..
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    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
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    Heidelberg Univ, Landessternwarte Konigstuhl, D-69117 Heidelberg, Germany..
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    Univ Bordeaux 1, CEN Bordeaux Gradignan, CNRS, IN2P3, F-33175 Gradignan, France..
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    Stockholm Univ, Albanova Univ Ctr, Dept Phys, Oskar Klein Ctr, S-10691 Stockholm, Sweden..
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    Univ Paris 06, LPNHE, Univ Denis Diderot Paris 7, CNRS,IN2P3, 4 Pl Jussieu, F-75252 Paris 5, France..
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    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.;Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia..
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    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
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    Univ Paris Diderot, Observ Paris, AstroParticule & Cosmol, CNRS,IN2P3,CEA,Irfu,APC,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Domainko, W.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Donath, A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    UJF Grenoble 1, IPAG, CNRS INSU, UMR 5274, F-38041 Grenoble, France..
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    Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, UK.
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    Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
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    Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Edwards, T.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Ernenwein, J. -P
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    Aix Marseille Univ, CNRS, IN2P3, CPPM UMR 7346, F-13288 Marseille, France..
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    Stockholm Univ, Albanova Univ Ctr, Dept Phys, Oskar Klein Ctr, S-10691 Stockholm, Sweden..
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    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
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    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany.;Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France..
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    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
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    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
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    Univ Paris Diderot, Observ Paris, AstroParticule & Cosmol, CNRS,IN2P3,CEA,Irfu,APC,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
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    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Gallant, Y. A.
    Univ Montpellier 2, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
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    DESY, D-15738 Zeuthen, Germany..
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    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Glicenstein, J. F.
    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
    Gottschall, D.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Goyal, A.
    Uniwersytet Jagiellonski, Obserwatorium Astronomiczne, Ulica Orla 171, PL-30244 Krakow, Poland..
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    Grudzinska, M.
    Univ Warsaw, Astron Observ, Aleje Ujazdowskie 4, PL-00478 Warsaw, Poland..
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    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
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    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
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    UJF Grenoble 1, IPAG, CNRS INSU, UMR 5274, F-38041 Grenoble, France..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    PSL Res Univ, Univ Paris Diderot, CNRS, Observ Paris,LUTH, 5 Pl Jules Janssen, F-92190 Meudon, France..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, UK..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    DESY, D-15738 Zeuthen, Germany..
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    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
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    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
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    Univ Paris 06, LPNHE, Univ Denis Diderot Paris 7, CNRS,IN2P3, 4 Pl Jussieu, F-75252 Paris 5, France..
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    Uniwersytet Jagiellonski, Obserwatorium Astronomiczne, Ulica Orla 171, PL-30244 Krakow, Poland..
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    Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
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    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Jankowsky, F.
    Heidelberg Univ, Landessternwarte Konigstuhl, D-69117 Heidelberg, Germany..
    Jingo, M.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Jogler, T.
    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
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    Univ Paris Diderot, Observ Paris, AstroParticule & Cosmol, CNRS,IN2P3,CEA,Irfu,APC,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Jung-Richardt, I.
    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Kastendieck, M. A.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
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    Nicholas Copernicus Univ, Ctr Astron, Ulica Gagarina 11, PL-87100 Torun, Poland..
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    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
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    Univ Paris 06, LPNHE, Univ Denis Diderot Paris 7, CNRS,IN2P3, 4 Pl Jussieu, F-75252 Paris 5, France..
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    Univ Paris Diderot, Observ Paris, AstroParticule & Cosmol, CNRS,IN2P3,CEA,Irfu,APC,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
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    Univ Paris 06, LPNHE, Univ Denis Diderot Paris 7, CNRS,IN2P3, 4 Pl Jussieu, F-75252 Paris 5, France..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    DESY, D-15738 Zeuthen, Germany..
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    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
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    Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
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    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
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    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
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    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
    Krakau, S.
    Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, D-44780 Bochum, Germany..
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    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
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    Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France..
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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
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    Univ Bordeaux 1, CEN Bordeaux Gradignan, CNRS, IN2P3, F-33175 Gradignan, France..
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    Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France..
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    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
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    PSL Res Univ, Univ Paris Diderot, CNRS, Observ Paris,LUTH, 5 Pl Jules Janssen, F-92190 Meudon, France..
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    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
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    Univ Paris Diderot, Observ Paris, AstroParticule & Cosmol, CNRS,IN2P3,CEA,Irfu,APC,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
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    Univ Bordeaux 1, CEN Bordeaux Gradignan, CNRS, IN2P3, F-33175 Gradignan, France..
    Lenain, J. -P
    Leser, E.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Lohse, T.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
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    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
    Lui, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    DESY, D-15738 Zeuthen, Germany..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Univ Montpellier 2, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
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    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France..
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    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
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    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
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    Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa..
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    Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, D-44780 Bochum, Germany..
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    Stockholm Univ, Albanova Univ Ctr, Dept Phys, Oskar Klein Ctr, S-10691 Stockholm, Sweden..
    Mitchell, A. M. W.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Mohamed, M.
    Heidelberg Univ, Landessternwarte Konigstuhl, D-69117 Heidelberg, Germany..
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    Stockholm Univ, Albanova Univ Ctr, Dept Phys, Oskar Klein Ctr, S-10691 Stockholm, Sweden..
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    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
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    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
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    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
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    Univ Amsterdam, Astron Inst Anton Pannekoek, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
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    Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
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    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
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    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Ohm, S.
    DESY, D-15738 Zeuthen, Germany..
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    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Ostrowski, M.
    Uniwersytet Jagiellonski, Obserwatorium Astronomiczne, Ulica Orla 171, PL-30244 Krakow, Poland..
    Oya, I.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Padovani, M.
    Univ Montpellier, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Panter, M.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Parsons, R. D.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Arribas, M. Paz
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Pekeur, N. W.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Pelletier, G.
    UJF Grenoble 1, IPAG, CNRS INSU, UMR 5274, F-38041 Grenoble, France..
    Petrucci, P. -O
    Peyaud, B.
    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
    Pita, S.
    Univ Paris Diderot, Observ Paris, AstroParticule & Cosmol, CNRS,IN2P3,CEA,Irfu,APC,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Poon, H.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Prokhorov, Dmitry
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Prokoph, Heike
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Puehlhofer, G.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Punch, Michael
    Univ Paris Diderot, France.
    Quirrenbach, A.
    Heidelberg Univ, Landessternwarte Konigstuhl, D-69117 Heidelberg, Germany..
    Raab, S.
    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Reimer, A.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Reimer, O.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Renaud, M.
    Univ Montpellier 2, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    de los Reyes, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Rieger, F.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Romoli, C.
    Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland..
    Rosier-Lees, S.
    Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France..
    Rowell, G.
    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
    Rudak, B.
    Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Rulten, C. B.
    PSL Res Univ, Univ Paris Diderot, CNRS, Observ Paris,LUTH, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Sahakian, V.
    Natl Acad Sci Republ Armenia, Marshall Baghramian Ave 24, Yerevan 0019, Armenia.;Yerevan Phys Inst, 2 Alikhanian Bros St, Yerevan 375036, Armenia..
    Salek, D.
    Univ Amsterdam, Inst High Energy Phys, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Sanchez, D. A.
    Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France..
    Santangelo, A.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Sasaki, M.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Schlickeiser, R.
    Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, D-44780 Bochum, Germany..
    Schussler, F.
    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
    Schulz, A.
    DESY, D-15738 Zeuthen, Germany..
    Schwanke, U.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Schwemmer, S.
    Heidelberg Univ, Landessternwarte Konigstuhl, D-69117 Heidelberg, Germany..
    Seyffert, A. S.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Shafi, N.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Simoni, R.
    Univ Amsterdam, Astron Inst Anton Pannekoek, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Sol, H.
    PSL Res Univ, Univ Paris Diderot, CNRS, Observ Paris,LUTH, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Spanier, F.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Spengler, G.
    Stockholm Univ, Albanova Univ Ctr, Dept Phys, Oskar Klein Ctr, S-10691 Stockholm, Sweden..
    Spiess, F.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Stawarz, L.
    Uniwersytet Jagiellonski, Obserwatorium Astronomiczne, Ulica Orla 171, PL-30244 Krakow, Poland..
    Steenkamp, R.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia..
    Stegmann, C.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany.;DESY, D-15738 Zeuthen, Germany..
    Stinzing, F.
    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Stycz, K.
    DESY, D-15738 Zeuthen, Germany..
    Sushch, I.
    North West Univ, Ctr Space Phys, ZA-2520 Potchefstroom, South Africa..
    Tavernet, J. -P
    Tavernier, T.
    Univ Paris Diderot, Observ Paris, AstroParticule & Cosmol, CNRS,IN2P3,CEA,Irfu,APC,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Taylor, A. M.
    Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland..
    Terrier, R.
    Univ Paris Diderot, Observ Paris, AstroParticule & Cosmol, CNRS,IN2P3,CEA,Irfu,APC,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Tluczykont, M.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Trichard, C.
    Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France..
    Tuffs, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    van der Walt, J.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    van Eldik, C.
    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    van Soelen, B.
    Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa..
    Vasileiadis, G.
    Univ Montpellier 2, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Veh, J.
    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Venter, C.
    North West Univ, Ctr Space Phys, ZA-2520 Potchefstroom, South Africa..
    Viana, A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Vincent, P.
    Univ Paris 06, LPNHE, Univ Denis Diderot Paris 7, CNRS,IN2P3, 4 Pl Jussieu, F-75252 Paris 5, France..
    Vink, J.
    Univ Amsterdam, Astron Inst Anton Pannekoek, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Voisin, F.
    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
    Voelk, H. J.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Vuillaume, T.
    Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France..
    Wadiasingh, Z.
    North West Univ, Ctr Space Phys, ZA-2520 Potchefstroom, South Africa..
    Wagner, S. J.
    Heidelberg Univ, Landessternwarte Konigstuhl, D-69117 Heidelberg, Germany..
    Wagner, P.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Wagner, R. M.
    Stockholm Univ, Albanova Univ Ctr, Dept Phys, Oskar Klein Ctr, S-10691 Stockholm, Sweden..
    White, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, UK.
    Wierzcholska, A.
    Uniwersytet Jagiellonski, Obserwatorium Astronomiczne, Ulica Orla 171, PL-30244 Krakow, Poland..
    Willmann, P.
    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Woernlein, A.
    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Wouters, D.
    CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France..
    Yang, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Zabalza, V.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, UK.
    Zaborov, D.
    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Zacharias, M.
    Heidelberg Univ, Landessternwarte Konigstuhl, D-69117 Heidelberg, Germany..
    Zdziarski, A. A.
    Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Zech, A.
    PSL Res Univ, Univ Paris Diderot, CNRS, Observ Paris,LUTH, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Zefi, F.
    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Ziegler, A.
    Univ Erlangen Nurnberg, Inst Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Zywucka, N.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Search for Dark Matter Annihilations towards the Inner Galactic Halo from 10 Years of Observations with HESS2016In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 117, no 11, article id 111301Article in journal (Refereed)
    Abstract [en]

    The inner region of the Milky Way halo harbors a large amount of dark matter (DM). Given its proximity, it is one of the most promising targets to look for DM. We report on a search for the annihilations of DM particles using gamma-ray observations towards the inner 300 pc of the Milky Way, with the H.E.S.S. array of ground-based Cherenkov telescopes. The analysis is based on a 2D maximum likelihood method using Galactic Center (GC) data accumulated by H.E.S.S. over the last 10 years (2004-2014), and does not show any significant gamma-ray signal above background. Assuming Einasto and Navarro-Frenk-White DM density profiles at the GC, we derive upper limits on the annihilation cross section <sigma nu >. These constraints are the strongest obtained so far in the TeV DM mass range and improve upon previous limits by a factor 5. For the Einasto profile, the constraints reach <sigma nu > values of 6 x 10(-26) cm(3) s(-1) in the W+W- channel for a DM particle mass of 1.5 TeV, and 2 x 10(-26) cm(3) s(-1) in the tau(+)tau(-) channel for a 1 TeV mass. For the first time, ground-based gamma-ray observations have reached sufficient sensitivity to probe <sigma nu > values expected from the thermal relic density for TeV DM particles.

  • 54.
    Abdallah, H.
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    North-West University, South Africa.
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    University of Hamburg, Germany.
    Aharonian, F.
    Max Planck Institute for Nuclear Physics, Germany ; Dublin Institute for Advanced Studies, Ireland ; National Academy of Sciences of the Republic of Armenia, Armenia.
    Benkhali, F. Ait
    Max Planck Institute for Nuclear Physics, Germany.
    Anguner, E. O.
    Institute of Nuclear Physics, Poland.
    Arakawa, M.
    Rikkyo University, Japan.
    Arrieta, M.
    Paris Diderot University, France.
    Aubert, P.
    University of Savoy, France.
    Backes, M.
    University of Namibia, Namibia.
    Balzer, A.
    Univ Amsterdam, GRAPPA, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Barnard, M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Tjus, J. Becker
    Ruhr Univ Bochum, Lehrstuhl Weltraum & Astrophys 4, Inst Theoret Phys, D-44780 Bochum, Germany..
    Berge, D.
    Univ Amsterdam, GRAPPA, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Bernhard, S.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Bernloehr, K.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Blackwell, R.
    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
    Bottcher, M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Boisson, C.
    Univ Paris Diderot, PSL Res Univ, CNRS, LUTH,Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Bolmont, J.
    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
    Bonnefoy, S.
    DESY, D-15738 Zeuthen, Germany..
    Bordas, P.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Bregeon, J.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Brun, F.
    Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France..
    Brun, P.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Bryan, M.
    Univ Amsterdam, GRAPPA, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Buechele, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Bulik, T.
    Univ Warsaw, Astron Observ, Al Ujazdowskie 4, PL-4 Warsaw, Poland..
    Capasso, M.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Caroff, S.
    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Carosi, A.
    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
    Carr, J.
    Aix Marseille Univ, CNRS, IN2P3, CPPM UMR 7346, F-13288 Marseille, France..
    Casanova, S.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Cerruti, M.
    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
    Chakraborty, N.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Chaves, R. C. G.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Chen, A.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Chevalier, J.
    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
    Colafrancesco, S.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Condon, B.
    Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France..
    Conrad, J.
    Stockholm Univ, Albanova Univ Ctr, Oskar Klein Ctr, Dept Phys, SE-10691 Stockholm, Sweden..
    Davids, I. D.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia..
    Decock, J.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Deil, C.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Devin, J.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Dewilt, P.
    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
    Dirson, L.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Djannati-Atai, A.
    Univ Paris Diderot, APC, CNRS IN2P3, Sorbonne Paris Cite,CEA Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Domainko, W.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Donath, A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Drury, L. O ' C
    Dutson, K.
    Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England..
    Dyks, J.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Edwards, T.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Egberts, K.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Eger, P.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Emery, G.
    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
    Ernenwein, J-P
    Aix Marseille Univ, CNRS, IN2P3, CPPM UMR 7346, F-13288 Marseille, France..
    Eschbach, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Farnier, Christian
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Stockholm University.
    Fegan, S.
    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Fernandes, M. , V
    Fiasson, A.
    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
    Fontaine, G.
    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Foerster, A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Funk, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Fuessling, M.
    DESY, D-15738 Zeuthen, Germany..
    Gabici, S.
    Univ Paris Diderot, APC, CNRS IN2P3, Sorbonne Paris Cite,CEA Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Gallant, Y. A.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Garrigoux, T.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Gate, F.
    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
    Giavitto, G.
    DESY, D-15738 Zeuthen, Germany..
    Giebels, B.
    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Glawion, D.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Glicenstein, J. F.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Gottschall, D.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Grondin, M-H
    Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France..
    Hahn, J.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Haupt, M.
    DESY, D-15738 Zeuthen, Germany..
    Hawkes, J.
    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
    Heinzelmann, G.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Henri, G.
    Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France..
    Hermann, G.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Hinton, J. A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Hofmann, W.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Hoischen, C.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Holch, T. L.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Holler, M.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Horns, D.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Ivascenko, A.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Iwasaki, H.
    Rikkyo Univ, Dept Phys, Toshima Ku, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    Jacholkowska, A.
    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
    Jamrozy, M.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Janiak, M.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Jankowsky, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Jankowsky, F.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Jingo, M.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Jouvin, L.
    Univ Paris Diderot, APC, CNRS IN2P3, Sorbonne Paris Cite,CEA Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Jung-Richardt, I
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Kastendieck, M. A.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Katarzynski, K.
    Nicolaus Copernicus Univ, Ctr Astron, Fac Phys Astron & Informat, Grudziadzka 5, PL-87100 Torun, Poland..
    Katsuragawa, M.
    Japan Aeropspace Explorat Agcy JAXA, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2298510, Japan..
    Katz, U.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Kerszberg, D.
    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
    Khangulyan, D.
    Rikkyo Univ, Dept Phys, Toshima Ku, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    Khelifi, B.
    Univ Paris Diderot, APC, CNRS IN2P3, Sorbonne Paris Cite,CEA Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    King, J.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Klepser, S.
    DESY, D-15738 Zeuthen, Germany..
    Klochkov, D.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Kluzniak, W.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Komin, Nu
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Kosack, K.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Krakau, S.
    Ruhr Univ Bochum, Lehrstuhl Weltraum & Astrophys 4, Inst Theoret Phys, D-44780 Bochum, Germany..
    Kraus, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Krueger, P. P.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
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    Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France..
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    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
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    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
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    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
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    Univ Paris Diderot, PSL Res Univ, CNRS, LUTH,Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France..
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    Univ Paris Diderot, APC, CNRS IN2P3, Sorbonne Paris Cite,CEA Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Lemoine-Goumard, M.
    Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France..
    Lenain, J-P
    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
    Leser, E.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Liu, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Lohse, T.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Lorentz, M.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Lopez-Coto, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Lypova, I
    DESY, D-15738 Zeuthen, Germany..
    Malyshev, D.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Marandon, V
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Marcowith, A.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Mariaud, C.
    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Marx, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Maurin, G.
    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
    Maxted, N.
    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia.;Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia..
    Mayer, M.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Meintjes, P. J.
    Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa..
    Meyer, M.
    Stockholm Univ, Albanova Univ Ctr, Oskar Klein Ctr, Dept Phys, SE-10691 Stockholm, Sweden..
    Mitchell, A. M. W.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Moderski, R.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Mohamed, M.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Mohrmann, L.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Mora, K.
    Stockholm Univ, Albanova Univ Ctr, Oskar Klein Ctr, Dept Phys, SE-10691 Stockholm, Sweden..
    Moulin, E.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Murach, T.
    DESY, D-15738 Zeuthen, Germany..
    Nakashima, S.
    Japan Aeropspace Explorat Agcy JAXA, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2298510, Japan..
    de Naurois, M.
    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Ndiyavala, H.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Niederwanger, F.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Niemiec, J.
    Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Oakes, L.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    O'Brien, P.
    Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England..
    Odaka, H.
    Japan Aeropspace Explorat Agcy JAXA, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2298510, Japan..
    Ohm, S.
    DESY, D-15738 Zeuthen, Germany..
    Ostrowski, M.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Oya, I
    DESY, D-15738 Zeuthen, Germany..
    Padovani, M.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Panter, M.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Parsons, R. D.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Pekeur, N. W.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Pelletier, G.
    Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France..
    Perennes, C.
    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
    Petrucci, P-O
    Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France..
    Peyaud, B.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Piel, Q.
    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
    Pita, S.
    Univ Paris Diderot, APC, CNRS IN2P3, Sorbonne Paris Cite,CEA Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Poireau, V
    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
    Poon, H.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Prokhorov, Dmitry
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Prokoph, H.
    Univ Amsterdam, GRAPPA, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Puelhofer, G.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Punch, Michael
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Paris Diderot, France.
    Quirrenbach, A.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Raab, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Rauth, R.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Reimer, A.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Reimer, O.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Renaud, M.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    De Los Reyes, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Rieger, F.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Rinchiuso, L.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Romoli, C.
    Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland..
    Rowell, G.
    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
    Rudak, B.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Rulten, C. B.
    Univ Paris Diderot, PSL Res Univ, CNRS, LUTH,Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Sahakian, V
    Natl Acad Sci Republ Armenia, Marshall Baghramian Ave 24, Yerevan 0019, Armenia.;Yerevan Phys Inst, 2 Alikhanian Bros St, Yerevan 375036, Armenia..
    Saito, S.
    Rikkyo Univ, Dept Phys, Toshima Ku, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    Sanchez, D. A.
    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
    Santangelo, A.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Sasaki, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Schandri, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Schlickeiser, R.
    Ruhr Univ Bochum, Lehrstuhl Weltraum & Astrophys 4, Inst Theoret Phys, D-44780 Bochum, Germany..
    Schussler, F.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Schulz, A.
    DESY, D-15738 Zeuthen, Germany..
    Schwanke, U.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Schwemmer, S.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Seglar-Arroyo, M.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Settimo, M.
    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
    Seyffert, A. S.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Shafi, N.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Shilon, I
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Shiningayamwe, K.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia..
    Simoni, R.
    Univ Amsterdam, GRAPPA, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Sol, H.
    Univ Paris Diderot, PSL Res Univ, CNRS, LUTH,Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Spanier, F.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Spir-Jacob, M.
    Univ Paris Diderot, APC, CNRS IN2P3, Sorbonne Paris Cite,CEA Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Stawarz, L.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Steenkamp, R.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia..
    Stegmann, C.
    DESY, D-15738 Zeuthen, Germany.;Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Steppa, C.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Sushch, I
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Takahashi, T.
    Japan Aeropspace Explorat Agcy JAXA, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2298510, Japan..
    Tavernet, J-P
    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
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    Univ Paris Diderot, APC, CNRS IN2P3, Sorbonne Paris Cite,CEA Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Taylor, A. M.
    DESY, D-15738 Zeuthen, Germany..
    Terrier, R.
    Univ Paris Diderot, APC, CNRS IN2P3, Sorbonne Paris Cite,CEA Irfu,Observ Paris, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France..
    Tibaldo, L.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Tiziani, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Tluczykont, M.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Trichard, C.
    Aix Marseille Univ, CNRS, IN2P3, CPPM UMR 7346, F-13288 Marseille, France..
    Tsirou, M.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Tsuji, N.
    Rikkyo Univ, Dept Phys, Toshima Ku, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    Tuffs, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Uchiyama, Y.
    Rikkyo Univ, Dept Phys, Toshima Ku, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
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    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
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    Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa..
    Vasileiadis, G.
    Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
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    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Venter, C.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Viana, A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;Univ Sao Paulo, Inst Fis Sao Carlos, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP, Brazil..
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    Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite,CNRS,LPNHE, 4 Pl Jussieu, F-75252 Paris 5, France..
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    Univ Amsterdam, GRAPPA, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
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    Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia..
    Voelk, H. J.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Univ Savoie Mont Blanc, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France..
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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
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    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Wagner, P.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Wagner, R. M.
    Stockholm Univ, Albanova Univ Ctr, Oskar Klein Ctr, Dept Phys, SE-10691 Stockholm, Sweden..
    White, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Willmann, P.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
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    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Wouters, D.
    Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France..
    Yang, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Zacharias, M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Zanin, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Zdziarski, A. A.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Zech, A.
    Univ Paris Diderot, PSL Res Univ, CNRS, LUTH,Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Zefi, F.
    Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France..
    Ziegler, A.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Zorn, J.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Zywucka, N.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Search for gamma-Ray Line Signals from Dark Matter Annihilations in the Inner Galactic Halo from 10 Years of Observations with HESS2018In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 120, no 20, article id 201101Article in journal (Refereed)
    Abstract [en]

    Spectral lines are among the most powerful signatures for dark matter (DM) annihilation searches in very-high-energy gamma rays. The central region of the Milky Way halo is one of the most promising targets given its large amount of DM and proximity to Earth. We report on a search for a monoenergetic spectral line from self-annihilations of DM particles in the energy range from 300 GeV to 70 TeV using a two-dimensional maximum likelihood method taking advantage of both the spectral and spatial features of the signal versus background. The analysis makes use of Galactic center observations accumulated over ten years (2004-2014) with the H.E.S.S. array of ground-based Cherenkov telescopes. No significant gamma-ray excess above the background is found. We derive upper limits on the annihilation cross section (sigma v) for monoenergetic DM lines at the level of 4 x 10(-28) cm(3) s(-1) at 1 TeV, assuming an Einasto DM profile for the Milky Way halo. For a DM mass of 1 TeV, they improve over the previous ones by a factor of 6. The present constraints are the strongest obtained so far for DM particles in the mass range 300 GeV-70 TeV. Ground-based gamma-ray observations have reached sufficient sensitivity to explore relevant velocity-averaged cross sections for DM annihilation into two gamma-ray photons at the level expected from the thermal relic density for TeV DM particles.

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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
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    Inst Polytech Paris, Lab Leprince Ringuet, CNRS, Cole Polytech, F-91128 Palaiseau, France..
    Aharonian, F.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland.;RAU, High Energy Astrophys Lab, 123 Hovsep Emin St, Yerevan 0051, Armenia..
    Benkhali, F. Ait
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Anguner, E. O.
    Aix Marseille Univ, CNRS, IN2P3, CPPM, F-13288 Marseille, France..
    Arakawa, M.
    Rikkyo Univ, Dept Phys, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Armand, C.
    Univ Grenoble Alpes, Lab Annecy Phys Particules, Univ Savoie Mt Blanc, CNRS,LAPP, F-74000 Annecy, France..
    Armstrong, T.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
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    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Backes, M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.;Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia..
    Baghmanyan, V
    PAN, Inst Fizyki Jadrowej, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Martins, V. Barbosa
    DESY, D-15738 Zeuthen, Germany..
    Barnacka, A.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Barnard, M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Berge, D.
    DESY, D-15738 Zeuthen, Germany..
    Bernloehr, K.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
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    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
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    PSL Res Univ, LUTH, Observ Paris, CNRS,Univ Paris Diderot, 5 Pl Jules Janssen, F-92190 Meudon, France..
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    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS,IN2P3,LPNHE, F-75252 Paris, France..
    Bonnefoy, S.
    DESY, D-15738 Zeuthen, Germany..
    Breuhaus, M.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Bregeon, J.
    Univ Montpellier, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
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    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Brun, P.
    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Bryan, M.
    Univ Amsterdam, GRAPPA, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Buechele, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Bulik, T.
    Univ Warsaw, Astron Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland..
    Bylund, Tomas
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Caroff, S.
    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS,IN2P3,LPNHE, F-75252 Paris, France..
    Carosi, A.
    Univ Grenoble Alpes, Lab Annecy Phys Particules, Univ Savoie Mt Blanc, CNRS,LAPP, F-74000 Annecy, France..
    Casanova, S.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;PAN, Inst Fizyki Jadrowej, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Chand, T.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Chandra, S.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Chen, A.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Cotter, G.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
    Curylo, M.
    Univ Warsaw, Astron Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland..
    Davids, I. D.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia..
    Davies, J.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
    Deil, C.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Devin, J.
    Univ Bordeaux, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France..
    deWilt, P.
    Univ Adelaide, Sch Phys Sci, Adelaide, SA 5005, Australia..
    Dirson, L.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Djannati-Atai, A.
    Univ Paris Diderot, CNRS, AstroParticule & Cosmol, APC,IN2P3,CEA Irfu,Observ Paris,Sorbonne Paris Ci, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France..
    Dmytriiev, A.
    PSL Res Univ, LUTH, Observ Paris, CNRS,Univ Paris Diderot, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Donath, A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Doroshenko, V
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Dyks, J.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Egberts, K.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Eichhorn, F.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Emery, G.
    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS,IN2P3,LPNHE, F-75252 Paris, France..
    Ernenwein, J-P
    Aix Marseille Univ, CNRS, IN2P3, CPPM, F-13288 Marseille, France..
    Eschbach, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Feijen, K.
    Univ Adelaide, Sch Phys Sci, Adelaide, SA 5005, Australia..
    Fegan, S.
    Inst Polytech Paris, Lab Leprince Ringuet, CNRS, Cole Polytech, F-91128 Palaiseau, France..
    Fiasson, A.
    Univ Grenoble Alpes, Lab Annecy Phys Particules, Univ Savoie Mt Blanc, CNRS,LAPP, F-74000 Annecy, France..
    Fontaine, G.
    Inst Polytech Paris, Lab Leprince Ringuet, CNRS, Cole Polytech, F-91128 Palaiseau, France..
    Funk, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Fuessling, M.
    DESY, D-15738 Zeuthen, Germany..
    Gabici, S.
    Univ Paris Diderot, CNRS, AstroParticule & Cosmol, APC,IN2P3,CEA Irfu,Observ Paris,Sorbonne Paris Ci, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France..
    Gallant, Y. A.
    Univ Montpellier, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Giavitto, G.
    DESY, D-15738 Zeuthen, Germany..
    Giunti, L.
    Univ Paris Diderot, CNRS, AstroParticule & Cosmol, APC,IN2P3,CEA Irfu,Observ Paris,Sorbonne Paris Ci, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France..
    Glawion, D.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Glicenstein, J. F.
    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Gottschall, D.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Grondin, M-H
    Univ Bordeaux, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France..
    Hahn, J.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Haupt, M.
    DESY, D-15738 Zeuthen, Germany..
    Hermann, G.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Hinton, J. A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Hofmann, W.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Hoischen, C.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Holch, T. L.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Holler, M.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Horbe, M.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
    Horns, D.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Huber, D.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Iwasaki, H.
    Rikkyo Univ, Dept Phys, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    Jamrozy, M.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Jankowsky, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Jankowsky, F.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Jardin-Blicq, A.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Joshi, V
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Jung-Richardt, I
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Kastendieck, M. A.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Katarzynski, K.
    Nicolaus Copernicus Univ, Ctr Astron, Fac Phys Astron & Informat, Grudziadzka 5, PL-87100 Torun, Poland..
    Katsuragawa, M.
    Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Inst Adv Study UTIAS, 5-1-5 Kashiwa No Ha, Kashiwa, Chiba 2778583, Japan..
    Katz, U.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Khangulyan, D.
    Rikkyo Univ, Dept Phys, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    Khelifi, B.
    Univ Paris Diderot, CNRS, AstroParticule & Cosmol, APC,IN2P3,CEA Irfu,Observ Paris,Sorbonne Paris Ci, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France..
    Klepser, S.
    DESY, D-15738 Zeuthen, Germany..
    Kluzniak, W.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Komin, Nu
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Konno, R.
    DESY, D-15738 Zeuthen, Germany..
    Kosack, K.
    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Kostunin, D.
    DESY, D-15738 Zeuthen, Germany..
    Kreter, M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Lamanna, G.
    Univ Grenoble Alpes, Lab Annecy Phys Particules, Univ Savoie Mt Blanc, CNRS,LAPP, F-74000 Annecy, France..
    Lemiere, A.
    Univ Paris Diderot, CNRS, AstroParticule & Cosmol, APC,IN2P3,CEA Irfu,Observ Paris,Sorbonne Paris Ci, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France..
    Lemoine-Goumard, M.
    Univ Bordeaux, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France..
    Lenain, J-P
    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS,IN2P3,LPNHE, F-75252 Paris, France..
    Leser, E.
    DESY, D-15738 Zeuthen, Germany.;Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Levy, C.
    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS,IN2P3,LPNHE, F-75252 Paris, France..
    Lohse, T.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Lypova, I
    DESY, D-15738 Zeuthen, Germany..
    Mackey, J.
    Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland..
    Majumdar, J.
    DESY, D-15738 Zeuthen, Germany..
    Malyshev, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany.;Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Marandon, V
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Marchegiani, P.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Marcowith, A.
    Univ Montpellier, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Mares, A.
    Univ Bordeaux, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France..
    Marti-Devesa, G.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Marx, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Maurin, G.
    Univ Grenoble Alpes, Lab Annecy Phys Particules, Univ Savoie Mt Blanc, CNRS,LAPP, F-74000 Annecy, France..
    Meintjes, P. J.
    Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa..
    Moderski, R.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Mohamed, M.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Mohrmann, L.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Moore, C.
    Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England..
    Morris, P.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
    Moulin, E.
    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Muller, J.
    Inst Polytech Paris, Lab Leprince Ringuet, CNRS, Cole Polytech, F-91128 Palaiseau, France..
    Murach, T.
    DESY, D-15738 Zeuthen, Germany..
    Nakashima, K.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Nakashima, S.
    RIKEN, 2-1 Hirosawa, Wako, Saitama 3510198, Japan..
    de Naurois, M.
    Inst Polytech Paris, Lab Leprince Ringuet, CNRS, Cole Polytech, F-91128 Palaiseau, France..
    Ndiyavala, H.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Niederwanger, F.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Niemiec, J.
    PAN, Inst Fizyki Jadrowej, Ul Radzikowskiego 152, PL-31342 Krakow, Poland..
    Oakes, L.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    O'Brien, P.
    Univ Leicester, Dept Phys & Astron, Univ Rd, Leicester LE1 7RH, Leics, England..
    Odaka, H.
    Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan..
    Ohm, S.
    DESY, D-15738 Zeuthen, Germany..
    Wilhelmi, E. de Ona
    DESY, D-15738 Zeuthen, Germany..
    Ostrowski, M.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Panter, M.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Parsons, R. D.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Peyaud, B.
    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Piel, Q.
    Univ Grenoble Alpes, Lab Annecy Phys Particules, Univ Savoie Mt Blanc, CNRS,LAPP, F-74000 Annecy, France..
    Pita, S.
    Univ Paris Diderot, CNRS, AstroParticule & Cosmol, APC,IN2P3,CEA Irfu,Observ Paris,Sorbonne Paris Ci, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France..
    Poireau, V
    Univ Grenoble Alpes, Lab Annecy Phys Particules, Univ Savoie Mt Blanc, CNRS,LAPP, F-74000 Annecy, France..
    Noel, A. Priyana
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Prokhorov, Dmitry
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Witwatersrand, South Africa.
    Prokoph, H.
    DESY, D-15738 Zeuthen, Germany..
    Puehlhofer, G.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Punch, Michael
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Paris Diderot, France.
    Quirrenbach, A.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Raab, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Rauth, R.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Reimer, A.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Reimer, O.
    Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria..
    Remy, Q.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Renaud, M.
    Univ Montpellier, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Rieger, F.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Rinchiuso, L.
    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Romoli, C.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Rowell, G.
    Univ Adelaide, Sch Phys Sci, Adelaide, SA 5005, Australia..
    Rudak, B.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Ruiz-Velasco, E.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Sahakian, V
    Yerevan Phys Inst, 2 Alikhanian Bros St, Yerevan 375036, Armenia..
    Sailer, S.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Saito, S.
    Rikkyo Univ, Dept Phys, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    Sanchez, D. A.
    Univ Grenoble Alpes, Lab Annecy Phys Particules, Univ Savoie Mt Blanc, CNRS,LAPP, F-74000 Annecy, France..
    Santangelo, A.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Sasaki, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Scalici, M.
    Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany..
    Schussler, F.
    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Schutter, H. M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Schwanke, U.
    Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany..
    Schwemmer, S.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Seglar-Arroyo, M.
    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Senniappan, Mohanraj
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Seyffert, A. S.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Shafi, N.
    Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa..
    Shiningayamwe, K.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia..
    Simoni, R.
    Univ Amsterdam, GRAPPA, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Sinha, A.
    Univ Paris Diderot, CNRS, AstroParticule & Cosmol, APC,IN2P3,CEA Irfu,Observ Paris,Sorbonne Paris Ci, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France..
    Sol, H.
    PSL Res Univ, LUTH, Observ Paris, CNRS,Univ Paris Diderot, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Specovius, A.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Spencer, S.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
    Spir-Jacob, M.
    Univ Paris Diderot, CNRS, AstroParticule & Cosmol, APC,IN2P3,CEA Irfu,Observ Paris,Sorbonne Paris Ci, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France..
    Stawarz, L.
    Uniwersytet Jagiellonski, Obserwatorium Astron, Ul Orla 171, PL-30244 Krakow, Poland..
    Steenkamp, R.
    Univ Namibia, Dept Phys, Private Bag 13301, Windhoek, Namibia..
    Stegmann, C.
    DESY, D-15738 Zeuthen, Germany.;Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Steppa, C.
    Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany..
    Takahashi, T.
    Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Inst Adv Study UTIAS, 5-1-5 Kashiwa No Ha, Kashiwa, Chiba 2778583, Japan..
    Tavernier, T.
    Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France..
    Taylor, A. M.
    DESY, D-15738 Zeuthen, Germany..
    Terrier, R.
    Univ Paris Diderot, CNRS, AstroParticule & Cosmol, APC,IN2P3,CEA Irfu,Observ Paris,Sorbonne Paris Ci, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France..
    Tiziani, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Tluczykont, M.
    Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany..
    Tomankova, L.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Trichard, C.
    Inst Polytech Paris, Lab Leprince Ringuet, CNRS, Cole Polytech, F-91128 Palaiseau, France..
    Tsirou, M.
    Univ Montpellier, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Tsuji, N.
    Rikkyo Univ, Dept Phys, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    Tuffs, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Uchiyama, Y.
    Rikkyo Univ, Dept Phys, 3-34-1 Nishi Ikebukuro, Tokyo 1718501, Japan..
    van der Walt, D. J.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    van Eldik, C.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    van Rensburg, C.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    van Soelen, B.
    Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa..
    Vasileiadis, G.
    Univ Montpellier, Lab Univ & Particules Montpellier, CNRS, IN2P3, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France..
    Veh, J.
    Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
    Venter, C.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Viana, A.
    Univ Sao Paulo, Inst Fis Sao Carlos, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP, Brazil..
    Vincent, P.
    Sorbonne Univ, Univ Paris Diderot, Sorbonne Paris Cite, CNRS,IN2P3,LPNHE, F-75252 Paris, France..
    Vink, J.
    Univ Amsterdam, GRAPPA, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.;Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands..
    Voelk, H. J.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Vuillaume, T.
    Univ Grenoble Alpes, Lab Annecy Phys Particules, Univ Savoie Mt Blanc, CNRS,LAPP, F-74000 Annecy, France..
    Wadiasingh, Z.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Wagner, S. J.
    Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Watson, J.
    Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England..
    Werner, F.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    White, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Wierzcholska, A.
    PAN, Inst Fizyki Jadrowej, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.;Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany..
    Yang, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Yoneda, H.
    Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Inst Adv Study UTIAS, 5-1-5 Kashiwa No Ha, Kashiwa, Chiba 2778583, Japan..
    Zacharias, M.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Zanin, R.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Zargaryan, D.
    Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland..
    Zdziarski, A. A.
    Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland..
    Zech, A.
    PSL Res Univ, LUTH, Observ Paris, CNRS,Univ Paris Diderot, 5 Pl Jules Janssen, F-92190 Meudon, France..
    Zhu, S.
    DESY, D-15738 Zeuthen, Germany..
    Zorn, J.
    Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..
    Zywucka, N.
    North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..
    Search for dark matter signals towards a selection of recently detected DES dwarf galaxy satellites of the Milky Way with HESS2020In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 102, no 6, p. 1-20, article id 062001Article in journal (Refereed)
    Abstract [en]

    Dwarf spheroidal galaxy satellites of the Milky Way are prime targets for indirect detection of dark matter with gamma rays due to their proximity, high dark matter content, and absence of nonthermal emission processes. Recently, the Dark Energy Survey (DES) revealed the existence of new ultrafaint dwarf spheroidal galaxies in the southern-hemisphere sky, therefore ideally located for ground-based observations with the imaging atmospheric Cherenkov telescope array H.E.S.S. We present a search for very-high-energy (E greater than or similar to 100 GeV) gamma-ray emission using H.E.S.S. observations carried out recently towards Reticulum II, Tucana II, Tucana III, Tucana IV, and Grus II satellites. No significant very-high-energy gamma-ray excess is found from the observations on any individual object nor in the combined analysis of all the datasets. Using the most recent modeling of the dark matter distribution in the dwarf galaxy halo, we compute for the first time on DES satellites individual and combined constraints from Cherenkov telescope observations on the annihilation cross section of dark matter particles in the form of Weakly Interacting Massive Particles. The combined 95% C.L. observed upper limits reach <sigma v > similar or equal to 1 x 10(-23) cm(3) s(-1) in the W+W- channel and 4 x 10(-26) cm(3) s(-1) in the gamma gamma channels for a dark matter mass of 1.5 TeV. The H.E.S.S. constraints well complement the results from Fermi-LAT, HAWC, MAGIC, and VERITAS and are currently the most stringent in the gamma gamma channels in the multi-GeV/multi-TeV mass range.

  • 56.
    Abdallah, H.
    et al.
    North West Univ, South Africa.
    Adam, R.
    Ecole Polytech, France.
    Aharonian, F.
    Max Planck Inst Kernphys, Germany;Dublin Inst Adv Studies, Ireland;RAU, Armenia.
    Benkhali, F. Ait
    Max Planck Inst Kernphys, Germany.
    Anguner, E. O.
    Aix Marseille Univ, France.
    Arcaro, C.
    North West Univ, South Africa.
    Armand, C.
    Univ Grenoble Alpes, France.
    Armstrong, T.
    Univ Oxford, UK.
    Ashkar, H.
    Univ Paris Saclay, France.
    Backes, M.
    North West Univ, South Africa;Univ Namibia, Namibia.
    Baghmanyan, V
    Instytut Fizyki Jądrowej PAN, Poland.
    Martins, V. Barbosa
    DESY, Germany.
    Barnacka, A.
    Uniwersytet Jagielloski, Poland.
    Barnard, M.
    North West Univ, South Africa.
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Berge, D.
    DESY, Germany.
    Bernloehr, K.
    Max Planck Inst Kernphys, Germany.
    Bi, B.
    Univ Tubingen, Germany.
    Bottcher, M.
    North West Univ, South Africa.
    Boisson, C.
    Univ Paris, France.
    Bolmont, J.
    Sorbonne Univ, France.
    de Lavergne, M. de Bony
    Univ Amsterdam, Netherlands.
    Breuhaus, M.
    Max Planck Inst Kernphys, Germany.
    Brun, F.
    Univ Paris Saclay, France.
    Brun, P.
    Univ Paris Saclay, France.
    Bryan, M.
    Univ Amsterdam, Netherlands.
    Buechele, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Bulik, T.
    Univ Warsaw, Poland.
    Bylund, Tomas
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Caroff, S.
    Sorbonne Univ, France.
    Carosi, A.
    Univ Amsterdam, Netherlands.
    Casanova, S.
    Max Planck Inst Kernphys, Germany;Inst Fizyki Jadrowej PAN, Poland.
    Chand, T.
    North West Univ, South Africa.
    Chandra, S.
    North West Univ, South Africa.
    Chen, A.
    Univ Witwatersrand, South Africa.
    Cotter, G.
    Univ Oxford, UK.
    Curylo, M.
    Univ Warsaw, Poland.
    Mbarubucyeye, J. Damascene
    DESY, Germany.
    Davids, I. D.
    Univ Namibia, Namibia.
    Davies, J.
    Univ Oxford, UK.
    Deil, C.
    Max Planck Inst Kernphys, Germany.
    Devin, J.
    Univ Bordeaux, France.
    DeWilt, P.
    Univ Adelaide, Australia.
    Dirson, L.
    Univ Hamburg, Germany.
    Djannati-Atai, A.
    Univ Paris, France.
    Dmytriiev, A.
    Univ Paris, France.
    Donath, A.
    Max Planck Inst Kernphys, Germany.
    Doroshenko, V
    Univ Tubingen, Germany.
    Duffy, C.
    Univ Leicester, UK.
    Dyks, J.
    Polish Acad Sci, Poland.
    Egberts, K.
    Univ Potsdam, Germany.
    Eichhorn, F.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Einecke, S.
    Univ Adelaide, Australia.
    Emery, G.
    Sorbonne Univ, France.
    Ernenwein, J-P
    Aix Marseille Univ, France.
    Feijen, K.
    Univ Adelaide, Australia.
    Fegan, S.
    Ecole Polytech, France.
    Fiasson, A.
    Univ Amsterdam, Netherlands.
    de Clairfontaine, G. Fichet
    Univ Paris, France.
    Fontaine, G.
    Ecole Polytech, France.
    Funk, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Fuessling, M.
    DESY, Germany.
    Gabici, S.
    Univ Paris, France.
    Gallant, Y. A.
    Univ Montpellier, France.
    Giavitto, G.
    DESY, Germany.
    Giunti, L.
    Univ Paris Saclay, France;Univ Paris, France.
    Glawion, D.
    Heidelberg Univ, Germany.
    Glicenstein, J. F.
    Univ Paris Saclay, France.
    Gottschall, D.
    Univ Tubingen, Germany.
    Grondin, M-H
    Univ Bordeaux, France.
    Hahn, J.
    Max Planck Inst Kernphys, Germany.
    Haupt, M.
    DESY, Germany.
    Hermann, G.
    Max Planck Inst Kernphys, Germany.
    Hinton, J. A.
    Max Planck Inst Kernphys, Germany.
    Hofmann, W.
    Max Planck Inst Kernphys, Germany.
    Hoischen, C.
    Univ Potsdam, Germany.
    Holch, T. L.
    Humboldt Univ, Germany.
    Holler, M.
    Leopold Franzens Univ Innsbruck, Austria.
    Horbe, M.
    Univ Oxford, UK.
    Horns, D.
    Univ Hamburg, Germany.
    Huber, D.
    Leopold Franzens Univ Innsbruck, Austria.
    Jamrozy, M.
    Uniwersytet Jagielloski, Poland.
    Jankowsky, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Jankowsky, F.
    Heidelberg Univ, Germany.
    Jardin-Blicq, A.
    Max Planck Inst Kernphys, Germany.
    Joshi, V
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Jung-Richardt, I
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Kasai, E.
    Univ Namibia, Namibia.
    Kastendieck, M. A.
    Univ Hamburg, Germany.
    Katarzynski, K.
    Nicolaus Copernicus Univ, Poland.
    Katz, U.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Khangulyan, D.
    Rikkyo Univ, Japan.
    Khelifi, B.
    Univ Paris, France.
    Klepser, S.
    DESY, Germany.
    Kluzniak, W.
    Polish Acad Sci, Poland.
    Komin, Nu
    Univ Witwatersrand, South Africa.
    Konno, R.
    DESY, Germany.
    Kosack, K.
    Univ Paris Saclay, France.
    Kostunin, D.
    DESY, Germany.
    Kreter, M.
    North West Univ, South Africa.
    Lamanna, G.
    Univ Amsterdam, Netherlands.
    Lemiere, A.
    Univ Paris, France.
    Lemoine-Goumard, M.
    Univ Bordeaux, France.
    Lenain, J-P
    Sorbonne Univ, France.
    Levy, C.
    Sorbonne Univ, France.
    Lohse, T.
    Humboldt Univ, Germany.
    Lypova, I
    DESY, Germany.
    Mackey, J.
    Dublin Inst Adv Studies, Ireland.
    Majumdar, J.
    DESY, Germany.
    Malyshev, D.
    Univ Tubingen, Germany;Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Marandon, V
    Max Planck Inst Kernphys, Germany.
    Marchegiani, P.
    Univ Witwatersrand, South Africa.
    Marcowith, A.
    Univ Montpellier, France.
    Mares, A.
    Univ Bordeaux, France.
    Marti-Devesa, G.
    Leopold Franzens Univ Innsbruck, Austria.
    Marx, R.
    Max Planck Inst Kernphys, Germany;Heidelberg Univ, Germany.
    Maurin, G.
    Univ Amsterdam, Netherlands.
    Meintjes, P. J.
    Univ Free State, South Africa.
    Meyer, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Moderski, R.
    Polish Acad Sci, Poland.
    Mohamed, M.
    Heidelberg Univ, Germany.
    Mohrmann, L.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Montanari, A.
    Univ Paris Saclay, France.
    Moore, C.
    Univ Leicester, UK.
    Morris, P.
    Univ Oxford, UK.
    Moulin, E.
    Univ Paris Saclay, France.
    Muller, J.
    Ecole Polytech, France.
    Murach, T.
    DESY, Germany.
    Nakashima, K.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Nayerhoda, A.
    Inst Fizyki Jadrowej PAN, Poland.
    de Naurois, M.
    Ecole Polytech, France.
    Ndiyavala, H.
    North West Univ, South Africa.
    Niederwanger, F.
    Leopold Franzens Univ Innsbruck, Austria.
    Niemiec, J.
    Inst Fizyki Jadrowej PAN, Poland.
    Oakes, L.
    Humboldt Univ, Germany.
    O'Brien, P.
    Univ Leicester, UK.
    Odaka, H.
    Univ Tokyo, Japan.
    Ohm, S.
    DESY, Germany.
    Olivera-Nieto, L.
    Max Planck Inst Kernphys, Germany.
    Wilhelmi, E. de Ona
    DESY, Germany.
    Ostrowski, M.
    Uniwersytet Jagielloski, Poland.
    Panter, M.
    Max Planck Inst Kernphys, Germany.
    Panny, S.
    Leopold Franzens Univ Innsbruck, Austria.
    Parsons, R. D.
    Humboldt Univ, Germany.
    Peron, G.
    Max Planck Inst Kernphys, Germany.
    Peyaud, B.
    Univ Paris Saclay, France.
    Piel, Q.
    Univ Amsterdam, Netherlands.
    Pita, S.
    Univ Paris, France.
    Poireau, V
    Univ Grenoble Alpes, France.
    Noel, A. Priyana
    Uniwersytet Jagielloski, Poland.
    Prokhorov, D. A.
    Humboldt Univ, Germany.
    Prokoph, H.
    DESY, Germany.
    Puhlhofer, G.
    Univ Tubingen, Germany.
    Punch, Michael
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Paris, France.
    Quirrenbach, A.
    Heidelberg Univ, Germany.
    Raab, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Rauth, R.
    Leopold Franzens Univ Innsbruck, Austria.
    Reichherzer, P.
    Univ Paris Saclay, France.
    Reimer, A.
    Leopold Franzens Univ Innsbruck, Austria.
    Reimer, O.
    Leopold Franzens Univ Innsbruck, Austria.
    Remy, Q.
    Max Planck Inst Kernphys, Germany.
    Renaud, M.
    Univ Montpellier, France.
    Rieger, F.
    Max Planck Inst Kernphys, Germany.
    Rinchiuso, L.
    Univ Paris Saclay, France.
    Romoli, C.
    Max Planck Inst Kernphys, Germany.
    Rowell, G.
    Univ Adelaide, Australia.
    Rudak, B.
    Polish Acad Sci, Poland.
    Ruiz-Velasco, E.
    Max Planck Inst Kernphys, Germany.
    Sahakian, V
    Yerevan Phys Inst, Armenia.
    Sailer, S.
    Max Planck Inst Kernphys, Germany.
    Sanchez, D. A.
    Univ Amsterdam, Netherlands.
    Santangelo, A.
    Univ Tubingen, Germany.
    Sasaki, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Scalici, M.
    Univ Tubingen, Germany.
    Schussler, F.
    Univ Paris Saclay, France.
    Schutte, H. M.
    North West Univ, South Africa.
    Schwanke, U.
    Humboldt Univ, Germany.
    Schwemmer, S.
    Heidelberg Univ, Germany.
    Seglar-Arroyo, M.
    Univ Paris Saclay, France.
    Senniappan, Mohanraj
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Seyffert, A. S.
    North West Univ, South Africa.
    Shafi, N.
    Univ Witwatersrand, South Africa.
    Shiningayamwe, K.
    Univ Namibia, Namibia.
    Simoni, R.
    Univ Amsterdam, Netherlands.
    Sinha, A.
    Université de Paris, France.
    Sol, H.
    Univ Paris, France.
    Specovius, A.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Spencer, S.
    Univ Oxford, UK.
    Spir-Jacob, M.
    Univ Paris, France.
    Stawarz, L.
    Uniwersytet Jagielloski, Poland.
    Sun, L.
    Univ Amsterdam, Netherlands.
    Steenkamp, R.
    Univ Namibia, Namibia.
    Stegmann, C.
    DESY, Germany.
    Steinmassl, S.
    Max Planck Inst Kernphys, Germany.
    Steppa, C.
    Univ Potsdam, Germany.
    Takahashi, T.
    Univ Tokyo, Japan.
    Tavernier, T.
    Univ Paris Saclay, France.
    Taylor, A. M.
    DESY, Germany.
    Terrier, R.
    Univ Paris, France.
    Tiziani, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Tluczykont, M.
    Univ Hamburg, Germany.
    Tomankova, L.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Trichard, C.
    Ecole Polytech, France.
    Tsirou, M.
    Univ Montpellier, France.
    Tuffs, R.
    Max Planck Inst Kernphys, Germany.
    Uchiyama, Y.
    Rikkyo Univ, Japan.
    van der Walt, D. J.
    North West Univ, South Africa.
    van Eldik, C.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    van Rensburg, C.
    North West Univ, South Africa.
    van Soelen, B.
    Univ Free State, South Africa.
    Vasileiadis, G.
    Univ Montpellier, France.
    Veh, J.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Venter, C.
    North West Univ, South Africa.
    Vincent, P.
    Sorbonne Univ, France.
    Vink, J.
    Univ Amsterdam, Netherlands.
    Volk, H. J.
    Max Planck Inst Kernphys, Germany.
    Vuillaume, T.
    Univ Amsterdam, Netherlands.
    Wadiasingh, Z.
    North West Univ, South Africa.
    Wagner, S. J.
    Heidelberg Univ, Germany.
    Watson, J.
    Univ Oxford, UK.
    Werner, F.
    Max Planck Inst Kernphys, Germany.
    White, R.
    Max Planck Inst Kernphys, Germany.
    Wierzcholska, A.
    Inst Fizyki Jadrowej PAN, Poland;Heidelberg Univ, Germany.
    Wong, Yu Wun
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Yusafzai, A.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Zacharias, M.
    North West Univ, South Africa;Univ Paris, France.
    Zanin, R.
    Max Planck Inst Kernphys, Germany.
    Zargaryan, D.
    Dublin Inst Adv Studies, Ireland;High Energy Astrophysics Laboratory, Armenia.
    Zdziarski, A. A.
    Polish Acad Sci, Poland.
    Zech, A.
    Univ Paris, France.
    Zhu, S.
    DESY, Germany.
    Zorn, J.
    Max Planck Inst Kernphys, Germany.
    Zouari, S.
    Univ Paris, France.
    Zywucka, N.
    North West Univ, South Africa.
    Search for dark matter annihilation in the Wolf-Lundmark-Melotte dwarf irregular galaxy with HESS2021In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 103, no 10, article id 102002Article in journal (Refereed)
    Abstract [en]

    We search for an indirect signal of dark matter through very high-energy gamma rays from the Wolf-Lundmark-Melotte (WLM) dwarf irregular galaxy. The pair annihilation of dark matter particles would produce Standard Model particles in the final state such as gamma rays, which might be detected by ground-based Cherenkov telescopes. Dwarf irregular galaxies represent promising targets as they are dark matter dominated objects with well-measured kinematics and small uncertainties on their dark matter distribution profiles. In 2018, the five-telescopes of the high energy stereoscopic system observed the dwarf irregular galaxy WLM for 18 hours. We present the first analysis based on data obtained from an imaging atmospheric Cherenkov telescope for this subclass of dwarf galaxy. As we do not observe any significant excess in the direction of WLM, we interpret the result in terms of constraints on the velocity-weighted cross section for dark matter pair annihilation <sigma v > as a function of the dark matter particle mass for various continuum channels, as well as the prompt gamma gamma emission. For the tau+tau- channel, the limits reach a <sigma v > value of about 4 x 10-22 cm3 s-1 for a dark matter particle mass of 1 TeV. For the prompt gamma gamma channel, the upper limit reaches a <sigma v > value of about 5 x 10-24 cm3 s-1 for a mass of 370 GeV. These limits represent an improvement of up to a factor 200, with respect to previous results for the dwarf irregular galaxies for TeV dark matter search.

  • 57.
    Abe, H.
    et al.
    Univ Tokyo, Japan.
    Abe, S.
    Univ Tokyo, Japan.
    Acciari, V. A.
    Univ La Laguna, Spain.
    Aniello, T.
    Natl Inst Astrophys INAF, Italy.
    Ansoldi, S.
    Univ Udine, Italy;INFN Trieste, Italy.
    Antonelli, L. A.
    Natl Inst Astrophys INAF, Italy.
    Engels, A. Arbet
    Max Planck Inst Phys & Astrophys, Germany.
    Arcaro, C.
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Artero, M.
    Barcelona Inst Sci & Technol BIST, Spain.
    Asano, K.
    Univ Tokyo, Japan.
    Baack, D.
    Tech Univ Dortmund, Germany.
    Babic, A.
    Univ Zagreb, Croatia.
    Baquero, A.
    Univ Complutense Madrid, Spain.
    de Almeida, U. Barres
    URCA, Brazil.
    Barrio, J. A.
    Univ Complutense Madrid, Spain.
    Batkovic, I
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Baxter, J.
    Univ Tokyo, Japan.
    Gonzalez, J. Becerra
    Univ La Laguna, Spain.
    Bednarek, W.
    Univ Lodz, Poland.
    Bernardini, E.
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Bernardos, M.
    Inst Astrofis Andalucia CSIC, Spain.
    Berti, A.
    Max Planck Inst Phys & Astrophys, Germany.
    Besenrieder, J.
    Max Planck Inst Phys & Astrophys, Germany.
    Bhattacharyya, W.
    Deutsch Elektronen Synchrotron DESY, Germany.
    Bigongiari, C.
    Natl Inst Astrophys INAF, Italy.
    Biland, A.
    Swiss Fed Inst Technol, Switzerland.
    Blanch, O.
    Barcelona Inst Sci & Technol BIST, Spain.
    Bonnoli, G.
    Natl Inst Astrophys INAF, Italy.
    Bosnjak, Z.
    Univ Zagreb, Croatia.
    Burelli, I
    Univ Udine, Italy;INFN Trieste, Italy.
    Busetto, G.
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Carosi, R.
    Univ Pisa, Italy;INFN Pisa, Italy.
    Carretero-Castrillo, M.
    Univ Barcelona, Spain.
    Ceribella, G.
    Univ Tokyo, Japan.
    Chai, Y.
    Max Planck Inst Phys & Astrophys, Germany.
    Chilingarian, A.
    Alikhanyan Natl Sci Lab, Armenia.
    Cikota, S.
    Univ Zagreb, Croatia.
    Colombo, E.
    Univ La Laguna, Spain..
    Contreras, J. L.
    Univ Complutense Madrid, Spain.
    Cortina, J.
    Ctr Invest Energet Medioambientales & Tecnol, Spain.
    Covino, S.
    Natl Inst Astrophys INAF, Italy.
    D'Amico, G.
    Univ Bergen, Norway.
    D'Elia, V
    Natl Inst Astrophys INAF, Italy.
    Da Vela, P.
    Univ Pisa, Italy;INFN Pisa, Italy.
    Dazzi, F.
    Natl Inst Astrophys INAF, Italy.
    De Angelis, A.
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    De Lotto, B.
    Univ Udine, Italy;INFN Trieste, Italy.
    Del Popolo, A.
    Univ Catania, Italy.
    Delfino, M.
    Barcelona Inst Sci & Technol BIST, Spain.
    Delgado, J.
    Barcelona Inst Sci & Technol BIST, Spain.
    Mendez, C. Delgado
    Ctr Invest Energet Medioambientales & Tecnol, Spain.
    Depaoli, D.
    INFN Sez Torino, Italy;Univ Torino, Italy.
    Di Pierro, F.
    INFN Sez Torino, Italy;Univ Torino, Italy.
    Di Venere, L.
    Univ Bari, Italy;Politecn Bari, Italy.
    Prester, D. Dominis
    Univ Rijeka, Croatia.
    Donini, A.
    Natl Inst Astrophys INAF, Italy.
    Dorner, D.
    Univ Wurzburg, Germany.
    Doro, M.
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Elsaesser, D.
    Tech Univ Dortmund, Germany.
    Emery, G.
    Univ Geneva, Switzerland.
    Ramazani, V. Fallah
    Univ Turku, Finland.
    Farina, L.
    Barcelona Inst Sci & Technol BIST, Spain.
    Fattorini, A.
    Tech Univ Dortmund, Germany.
    Font, L.
    Univ Autonoma Barcelona, Spain.
    Fruck, C.
    Max Planck Inst Phys & Astrophys, Germany.
    Fukami, S.
    Swiss Fed Inst Technol, Switzerland.
    Fukazawa, Y.
    Hiroshima Univ, Japan.
    Lopez, R. J. Garcia
    Univ La Laguna, Spain.
    Garczarczyk, M.
    Deutsch Elektronen Synchrotron DESY, Germany.
    Gasparyan, S.
    NAS RA, Armenia.
    Gaug, M.
    Univ Autonoma Barcelona, Spain.
    Paiva, J. G. Giesbrecht
    URCA, Brazil.
    Giglietto, N.
    Univ Bari, Italy;Politecn Bari, Italy.
    Giordano, F.
    Univ Bari, Italy;Politecn Bari, Italy.
    Gliwny, P.
    Univ Lodz, Poland.
    Godinovic, N.
    Univ Split, Croatia.
    Grau, R.
    Barcelona Inst Sci & Technol BIST, Spain.
    Green, D.
    Max Planck Inst Phys & Astrophys, Germany.
    Green, J. G.
    Max Planck Inst Phys & Astrophys, Germany.
    Hadasch, D.
    Univ Tokyo, Japan.
    Hahn, A.
    Max Planck Inst Phys & Astrophys, Germany.
    Hassan, T.
    Ctr Invest Energet Medioambientales & Tecnol, Spain.
    Heckmann, L.
    Max Planck Inst Phys & Astrophys, Germany.
    Herrera, J.
    Univ La Laguna, Spain.
    Hoang, J.
    Univ Complutense Madrid, Spain.
    Hrupec, D.
    Josip Juraj Strossmayer Univ Osijek, Croatia.
    Hutten, M.
    Univ Tokyo, Japan.
    Imazawa, R.
    Hiroshima Univ, Japan.
    Inada, T.
    Univ Tokyo, Japan.
    Iotov, R.
    Univ Wurzburg, Germany.
    Ishio, K.
    Univ Lodz, Poland.
    Martinez, I. Jimenez
    Ctr Invest Energet Medioambientales & Tecnol, Spain.
    Jormanainen, J.
    Univ Turku, Finland.
    Kerszberg, D.
    Barcelona Inst Sci & Technol BIST, Spain.
    Kobayashi, Y.
    Univ Tokyo, Japan.
    Kubo, H.
    Univ Tokyo, Japan.
    Kushida, J.
    Tokai Univ, Japan.
    Lamastra, A.
    Natl Inst Astrophys INAF, Italy.
    Lelas, D.
    Univ Split, Croatia.
    Leone, F.
    Natl Inst Astrophys INAF, Italy.
    Lindfors, E.
    Univ Turku, Finland.
    Linhoff, L.
    Tech Univ Dortmund, Germany.
    Lombardi, S.
    Natl Inst Astrophys INAF, Italy.
    Longo, F.
    Univ Udine, Italy;INFN Trieste, Italy.
    Lopez-Coto, R.
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Lopez-Moya, M.
    Univ Complutense Madrid, Spain.
    Lopez-Oramas, A.
    Univ La Laguna, Spain.
    Loporchio, S.
    Univ Bari, Italy;Politecn Bari, Italy.
    Lorini, A.
    Univ Siena, Italy;INFN Pisa, Italy.
    Lyard, E.
    Univ Geneva, Switzerland.
    Fraga, B. Machado de Oliveira
    URCA, Brazil.
    Majumdar, P.
    Homi Bhabha Natl Inst, India.
    Makariev, M.
    Bulgarian Acad Sci, Bulgaria.
    Maneva, G.
    Bulgarian Acad Sci, Bulgaria.
    Mang, N.
    Tech Univ Dortmund, Germany.
    Manganaro, M.
    Univ Rijeka, Croatia.
    Mangano, S.
    Ctr Invest Energet Medioambientales & Tecnol, Spain.
    Mannheim, K.
    Univ Wurzburg, Germany.
    Mariotti, M.
    Univ Padua, Italy.;Ist Nazl Fis Nucl, Italy.
    Martinez, M.
    Barcelona Inst Sci & Technol BIST, Spain.
    Aguilar, A. Mas
    Univ Complutense Madrid, Spain.
    Mazin, D.
    Univ Tokyo, Japan;Max Planck Inst Phys & Astrophys, Germany.
    Menchiari, S.
    Univ Siena, Italy;INFN Pisa, Italy.
    Mender, S.
    Tech Univ Dortmund, Germany.
    Micanovic, S.
    Univ Rijeka, Croatia.
    Miceli, D.
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Miener, T.
    Univ Complutense Madrid, Spain.
    Miranda, J. M.
    Univ Siena, Italy;INFN Pisa, Italy.
    Mirzoyan, R.
    Max Planck Inst Phys & Astrophys, Germany.
    Molina, E.
    Univ Barcelona, Spain.
    Mondal, H. A.
    Homi Bhabha Natl Inst, India.
    Moralejo, A.
    Barcelona Inst Sci & Technol BIST, Spain.
    Morcuende, D.
    Univ Complutense Madrid, Spain.
    Moreno, V
    Univ Autonoma Barcelona, Spain.
    Nakamori, T.
    Yamagata Univ, Japan.
    Nanci, C.
    Natl Inst Astrophys INAF, Italy.
    Nava, L.
    Natl Inst Astrophys INAF, Italy.
    Neustroev, V
    Univ Oulu, Finland.
    Rosillo, M. Nievas
    Univ La Laguna, Spain.
    Nigro, C.
    Barcelona Inst Sci & Technol BIST, Spain.
    Nilsson, K.
    Univ Turku, Finland.
    Nishijima, K.
    Tokai Univ, Japan.
    Ekoume, T. Njoh
    Univ La Laguna, Spain.
    Noda, K.
    Univ Tokyo, Japan.
    Nozaki, S.
    Max Planck Inst Phys & Astrophys, Germany.
    Ohtani, Y.
    Univ Tokyo, Japan.
    Oka, T.
    Kyoto Univ, Japan.
    Okumura, A.
    Nagoya Univ, Japan.
    Otero-Santos, J.
    Univ La Laguna, Spain.
    Paiano, S.
    Natl Inst Astrophys INAF, Italy.
    Palatiello, M.
    Univ Udine, Italy;INFN Trieste, Italy.
    Paneque, D.
    Max Planck Inst Phys & Astrophys, Germany.
    Paoletti, R.
    Univ Siena, Italy;INFN Pisa, Italy.
    Paredes, J. M.
    Univ Barcelona, Spain.
    Pavletic, L.
    Univ Rijeka, Croatia.
    Persic, M.
    Univ Udine, Italy;INFN Trieste, Italy.
    Pihet, M.
    Max Planck Inst Phys & Astrophys, Germany.
    Pirola, G.
    Max Planck Inst Phys & Astrophys, Germany.
    Podobnik, F.
    Univ Siena, Italy;INFN Pisa, Italy.
    Moroni, P. G. Prada
    Univ Pisa, Italy;INFN Pisa, Italy.
    Prandini, E.
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Principe, G.
    Univ Udine, Italy;INFN Trieste, Italy.
    Priyadarshi, C.
    Barcelona Inst Sci & Technol BIST, Spain.
    Puljak, I
    Univ Split, Croatia.
    Rhode, W.
    Tech Univ Dortmund, Germany.
    Ribo, M.
    Univ Barcelona, Spain.
    Rico, J.
    Barcelona Inst Sci & Technol BIST, Spain.
    Righi, C.
    Natl Inst Astrophys INAF, Italy.
    Rugliancich, A.
    Univ Pisa, Italy;INFN Pisa, Italy.
    Sahakyan, N.
    NAS RA, Armenia.
    Saito, T.
    Univ Tokyo, Japan.
    Sakurai, S.
    Univ Tokyo, Japan.
    Satalecka, K.
    Univ Turku, Finland.
    Saturni, F. G.
    Natl Inst Astrophys INAF, Italy.
    Schleicher, B.
    Univ Wurzburg, Germany.
    Schmidt, K.
    Tech Univ Dortmund, Germany.
    Schmuckermaier, F.
    Max Planck Inst Phys & Astrophys, Germany.
    Schubert, J. L.
    Tech Univ Dortmund, Germany.
    Schweizer, T.
    Max Planck Inst Phys & Astrophys, Germany.
    Sitarek, J.
    Univ Lodz, Poland.
    Sliusar, V
    Univ Geneva, Switzerland.
    Sobczynska, D.
    Univ Lodz, Poland.
    Spolon, A.
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Stamerra, A.
    Natl Inst Astrophys INAF, Italy.
    Striskovic, J.
    Josip Juraj Strossmayer Univ Osijek, Croatia.
    Strom, D.
    Max Planck Inst Phys & Astrophys, Germany.
    Strzys, M.
    Univ Tokyo, Japan.
    Suda, Y.
    Hiroshima Univ, Japan.
    Suric, T.
    Rudjer Boskovic Inst, Croatia.
    Tajima, H.
    Nagoya Univ, Japan.
    Takahashi, M.
    Nagoya Univ, Japan.
    Takeishi, R.
    Univ Tokyo, Japan.
    Tavecchio, F.
    Natl Inst Astrophys INAF, Italy.
    Temnikov, P.
    Bulgarian Acad Sci, Bulgaria.
    Terauchi, K.
    Kyoto Univ, Japan.
    Terzic, T.
    Univ Rijeka, Croatia.
    Teshima, M.
    Univ Tokyo, Japan;Max Planck Inst Phys & Astrophys, Germany.
    Tosti, L.
    INFN Sez Perugia, Italy.
    Truzzi, S.
    Univ Siena, Italy;INFN Pisa, Italy.
    Tutone, A.
    Natl Inst Astrophys INAF, Italy.
    Ubach, S.
    Univ Autonoma Barcelona, Spain.
    van Scherpenberg, J.
    Max Planck Inst Phys & Astrophys, Germany.
    Acosta, M. Vazquez
    Univ La Laguna, Spain.
    Ventura, S.
    Univ Siena, Italy;INFN Pisa, Italy.
    Verguilov, V.
    Bulgarian Acad Sci, Bulgaria.
    Viale, I
    Univ Padua, Italy;Ist Nazl Fis Nucl, Italy.
    Vigorito, C. F.
    INFN Sez Torino, Italy;Univ Torino, Italy.
    Vitale, V.
    INFN Roma Tor Vergata, Italy.
    Vovk, I
    Univ Tokyo, Japan.
    Walter, R.
    Univ Geneva, Switzerland.
    Will, M.
    Max Planck Inst Phys & Astrophys, Germany.
    Wunderlich, C.
    Univ Siena, Italy;INFN Pisa, Italy.
    Yamamoto, T.
    Konan Univ, Japan.
    Zaric, D.
    Univ Split, Croatia.
    Abdalla, H.
    Univ Namibia, Namibia.
    Aharonian, F.
    Dublin Inst Adv Studies, Ireland;Max Planck Inst Kernphys, Germany.
    Benkhali, F. Ait
    Heidelberg Univ, Germany.
    Anguner, E. O.
    Aix Marseille Univ, France.
    Ashkar, H.
    Ecole Polytech, France.
    Backes, M.
    Univ Namibia, Namibia;North West Univ, South Africa.
    Baghmanyan, V
    Inst Fizyki Jadrowej PAN, Poland.
    Martins, V. Barbosa
    DESY, Germany.
    Batzofin, R.
    Univ Witwatersrand, South Africa.
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Paris Cite, France.
    Berge, D.
    DESY, Germany;Humboldt Univ, Germany.
    Bernloehr, K.
    Max Planck Inst Kernphys, Germany.
    Bottcher, M.
    North West Univ, South Africa.
    Boisson, C.
    Univ Paris Cite, France.
    Bolmont, J.
    Sorbonne Univ, France.
    de Lavergne, M. de Bony
    Univ Savoie Mt Blanc, France.
    Bradascio, F.
    Univ Paris Saclay, France.
    Breuhaus, M.
    Max Planck Inst Kernphys, Germany.
    Brose, R.
    Dublin Inst Adv Studies, Ireland.
    Brun, F.
    Univ Paris Saclay, France.
    Bulik, T.
    Univ Warsaw, Poland.
    Bylund, Tomas
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Cangemi, F.
    Sorbonne Univ, France.
    Caroff, S.
    Sorbonne Univ, France.
    Casanova, S.
    Inst Fizyki Jadrowej PAN, Poland.
    Cerruti, M.
    Univ Paris Cite, France.
    Chand, T.
    North West Univ, South Africa.
    Chandra, S.
    North West Univ, South Africa.
    Chen, A.
    Univ Witwatersrand, South Africa.
    Chibueze, O. U.
    North West Univ, South Africa.
    Cotter, G.
    Univ Oxford, UK.
    Cristofari, P.
    Univ Paris Cite, France.
    Mbarubucyeye, J. Damascene
    DESY, Germany.
    Devin, J.
    Univ Bordeaux, France.
    Djannati-Atai, A.
    Univ Paris Cite, France.
    Dmytriiev, A.
    Univ Paris Cite, France.
    Egberts, K.
    Univ Potsdam, Germany.
    Ernenwein, J-P
    Aix Marseille Univ, France.
    Fiasson, A.
    Univ Savoie Mt Blanc, France.
    de Clairfontaine, G. Fichet
    Univ Paris Cite, France.
    Fontaine, G.
    Ecole Polytech, France.
    Fuessling, M.
    DESY, Germany.
    Funk, S.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Gabici, S.
    Univ Paris Cite, France.
    Ghafourizadeh, S.
    Heidelberg Univ, Germany.
    Giavitto, G.
    DESY, Germany.
    Glawion, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Glicenstein, J. F.
    Univ Paris Saclay, France.
    Goswami, P.
    North West Univ, South Africa.
    Grolleron, G.
    Sorbonne Univ, France.
    Hinton, J. A.
    Max Planck Inst Kernphys, Germany.
    Horbe, M.
    Univ Oxford, UK.
    Hoischen, C.
    Univ Potsdam, Germany.
    Holch, T. L.
    Leopold Franzens Univ Innsbruck, Austria.
    Holler, M.
    Univ Hamburg, Germany.
    Horns, D.
    Univ Hamburg, Germany.
    Huang, Zhiqiu
    Max Planck Inst Kernphys, Germany.
    Jamrozy, M.
    Uniwersytet Jagiellonski, Poland.
    Jankowsky, F.
    Heidelberg Univ, Germany.
    Joshi, V
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Jung-Richardt, I
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Kasai, E.
    Max Planck Inst Kernphys, Germany.
    Katarzynski, K.
    Nicolaus Copernicus Univ, Poland.
    Katz, U.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Khelifi, B.
    Univ Paris Cite, France.
    Kluzniak, W.
    Polish Acad Sci, Poland.
    Komin, Nu
    Univ Witwatersrand, South Africa.
    Kosack, K.
    Univ Paris Saclay, France.
    Kostunin, D.
    North West Univ, South Africa.
    Lang, R. G.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Le Stum, S.
    Aix Marseille Univ, France.
    Lemiere, A.
    Univ Paris Cite, France.
    Lemoine-Goumard, M.
    Univ Bordeaux, France.
    Lenain, J-P
    Sorbonne Univ, France.
    Leuschner, F.
    Univ Tubingen, Germany.
    Lohse, T.
    Humboldt Univ, Germany.
    Luashvili, A.
    Univ Paris Cite, France.
    Lypova, I
    Heidelberg Univ, Germany.
    Mackey, J.
    Dublin Inst Adv Studies, Ireland.
    Majumdar, J.
    DESY, Germany.
    Malyshev, D.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany;Univ Tubingen, Germany.
    Marandon, V
    Max Planck Inst Kernphys, Germany.
    Marchegiani, P.
    Univ Witwatersrand, South Africa.
    Marti-Devesa, G.
    Leopold Franzens Univ Innsbruck, Austria.
    Marx, R.
    Heidelberg Univ, Germany.
    Maurin, G.
    Univ Savoie Mt Blanc, France.
    Meyer, M.
    Univ Hamburg, Germany.
    Mitchell, A.
    Max Planck Inst Kernphys, Germany;Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Moderski, R.
    Polish Acad Sci, Poland.
    Mohrmann, L.
    Max Planck Inst Kernphys, Germany.
    Montanari, A.
    Univ Paris Saclay, France.
    Moulin, E.
    Univ Paris Saclay, France.
    Muller, J.
    Ecole Polytech, France.
    Murach, T.
    DESY, Germany.
    Nakashima, K.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    de Naurois, M.
    Ecole Polytech, France.
    Nayerhoda, A.
    Inst Fizyki Jadrowej PAN, Poland.
    Niemiec, J.
    Inst Fizyki Jadrowej PAN, Poland.
    Noel, A. Pniyana
    Uniwersytet Jagiellonski, Poland.
    O'Brien, P.
    Univ Leicester, UK.
    Ohm, S.
    DESY, Germany.
    Olivera-Nieto, L.
    Max Planck Inst Kernphys, Germany.
    Wilhelmi, E. de Ona
    DESY, Germany.
    Ostrowski, M.
    Uniwersytet Jagiellonski, Poland.
    Panny, S.
    Leopold Franzens Univ Innsbruck, Austria.
    Panter, M.
    Max Planck Inst Kernphys, Germany.
    Parsons, R. D.
    Humboldt Univ, Germany.
    Poireau, V
    Univ Savoie Mt Blanc, France.
    Prokhorov, D. A.
    Univ Amsterdam, Netherlands.
    Prokoph, H.
    DESY, Germany.
    Puehlhofer, G.
    Univ Tubingen, Germany.
    Punch, Michael
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Univ Paris Cite, France.
    Quirrenbach, A.
    Heidelberg Univ, Germany.
    Reichherzer, P.
    Univ Paris Saclay, France.
    Reimer, A.
    Leopold Franzens Univ Innsbruck, Austria.
    Reimer, O.
    Leopold Franzens Univ Innsbruck, Austria.
    Renaud, M.
    Univ Montpellier, France.
    Rieger, F.
    Leopold Franzens Univ Innsbruck, Austria.
    Rowell, G.
    Univ Adelaide, Australia.
    Rudak, B.
    Polish Acad Sci, Poland.
    Ricarte, H. Rueda
    Univ Paris Saclay, France.
    Ruiz-Velasco, E.
    Max Planck Inst Kernphys, Germany.
    Sahakian, V
    Yerevan Phys Inst, Armenia.
    Salzmann, H.
    Univ Tubingen, Germany.
    Santangelo, A.
    Univ Tubingen, Germany.
    Sasaki, M.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Schaefer, J.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Schussler, F.
    Univ Paris Saclay, France.
    Schutte, H. M.
    Sorbonne Univ, France.
    Schwanke, U.
    Humboldt Univ, Germany.
    Shapopi, J. N. S.
    Max Planck Inst Kernphys, Germany.
    Sol, H.
    Univ Paris Cite, France.
    Specovius, A.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Spencer, S.
    Polish Acad Sci, Poland.
    Stawarz, L.
    Uniwersytet Jagiellonski, Poland.
    Steenkamp, R.
    Max Planck Inst Kernphys, Germany.
    Steinmassl, S.
    Max Planck Inst Kernphys, Germany.
    Steppa, C.
    Univ Potsdam, Germany.
    Sushch, I
    North West Univ, South Africa.
    Suzuki, H.
    Konan Univ, Japan.
    Takahashi, T.
    Univ Tokyo, Japan.
    Tanaka, T.
    Konan Univ, Japan.
    Thorpe-Morgan, C.
    Univ Tubingen, Germany.
    Tluczykont, M.
    Univ Hamburg, Germany.
    Tomankova, L.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Tsuji, N.
    RIKEN, Japan.
    Uchiyama, Y.
    Rikkyo Univ, Japan.
    van Eldik, C.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    van Soelen, B.
    Univ Free State, South Africa.
    Vecchi, M.
    Univ Groningen, Netherlands.
    Veh, J.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Venter, C.
    North West Univ, South Africa.
    Vink, J.
    Univ Amsterdam, Netherlands.
    Wagner, S. J.
    Heidelberg Univ, Germany.
    White, R.
    Max Planck Inst Kernphys, Germany.
    Wierzcholska, A.
    Inst Fizyki Jadrowej PAN, Poland.
    Wong, Yu Wun
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Yusafzai, A.
    Friedrich Alexander Univ Erlangen Nurnberg, Germany.
    Zacharias, M.
    North West Univ, South Africa;Univ Paris Cite, France.
    Zanin, R.
    Max Planck Inst Kernphys, Germany.
    Zargaryan, D.
    Dublin Inst Adv Studies, Ireland.
    Zdziarski, A. A.
    Polish Acad Sci, Poland.
    Zech, A.
    Univ Paris Cite, France.
    Zhu, S. J.
    DESY, Germany.
    Zouari, S.
    Univ Paris Cite, France.
    Zywucka, N.
    North West Univ, South Africa.
    Acharyya, A.
    Univ Alabama, USA.
    Adams, C. B.
    Columbia Univ, USA.
    Batista, P.
    DESY, Germany.
    Benbow, W.
    Ctr Astrophys Harvard & Smithsonian, USA.
    Capasso, M.
    Columbia Univ, USA.
    Christiansen, J. L.
    Calif Polytech State Univ San Luis Obispo, USA.
    Chromey, A. J.
    Iowa State Univ, USA.
    Errando, M.
    Washington Univ, USA.
    Falcone, A.
    Pennsylva Nia State Univ, USA.
    Feng, Q.
    Columbia Univ, USA.
    Finley, J. P.
    Purdue Univ, USA.
    Foote, G. M.
    Univ Delaware, USA.
    Fortson, L.
    Univ Minnesota, USA.
    Furniss, A.
    Calif State Univ East Bay, USA.
    Gent, A.
    Georgia Inst Technol, USA.
    Hanlon, W. E.
    Ctr Astrophys Harvard & Smithsonian, USA.
    Hervet, O.
    Univ Calif Santa Cruz, USA.
    Holder, J.
    Univ Delaware, USA.
    Hona, B.
    Univ Utah, USA.
    Humensky, T. B.
    Columbia Univ, USA.
    Jin, W.
    Univ Alabama, USA.
    Kaaret, P.
    Univ Iowa, USA.
    Kertzman, M.
    DePauw Univ, USA.
    Kherlakian, M.
    DESY, Germany.
    Kleiner, T. K.
    DESY, Germany.
    Kumar, S.
    McGill Univ, Canada.
    Lang, M. J.
    Natl Univ Ireland Galway, Ireland.
    Lundy, M.
    McGill Univ, Canada.
    Maier, G.
    DESY, Germany.
    McGrath, C. E.
    Univ Coll Dublin, Ireland.
    Millis, J.
    Ball State Univ, USA;Anderson Univ, USA.
    Moriarty, P.
    Natl Univ Ireland Galway, Ireland.
    Mukherjee, R.
    Columbia Univ, USA.
    O'Brien, S.
    McGill Univ, Canada.
    Ong, R. A.
    Univ Calif Los Angeles, USA.
    Park, N.
    Queens Univ, Canada.
    Patel, S. R.
    DESY, Germany.
    Pfrang, K.
    DESY, Germany.
    Pohl, M.
    DESY, Germany;Univ Potsdam, Germany.
    Pueschel, E.
    DESY, Germany.
    Quinn, J.
    Univ Coll Dublin, Ireland.
    Ragan, K.
    McGill Univ, Canada.
    Reynolds, P. T.
    Munster Technol Univ, Ireland.
    Ribeiro, D.
    Columbia Univ, USA.
    Roache, E.
    Ctr Astrophys Harvard & Smithsonian, USA.
    Ryan, J. L.
    Univ Calif Los Angeles, USA.
    Sadeh, I
    DESY, Germany.
    Saha, L.
    Ctr Astrophys Harvard & Smithsonian, USA.
    Santander, M.
    Univ Alabama, USA.
    Sembroski, G. H.
    Purdue Univ, USA.
    Shang, R.
    Univ Calif Los Angeles, USA.
    Splettstoesser, M.
    Univ Calif Santa Cruz, USA.
    Tak, D.
    DESY, Germany.
    Tucci, J. , V
    Weinstein, A.
    Iowa State Univ, USA.
    Williams, D. A.
    Univ Calif Santa Cruz, USA.
    Williamson, T. J.
    Univ Delaware, USA.
    Bosch-Ramon, V
    Univ Barcelona, Spain.
    Celma, C.
    Univ Politecn Catalunya UPC, Spain.
    Linares, M.
    Univ Politecn Catalunya UPC, Spain;Norwegian Univ Sci & Technol, Norway.
    Russell, D. M.
    New York Univ Abu Dhabi, United Arab Emirates.
    Sala, G.
    Univ Politecn Catalunya UPC, Spain;Inst Estudis Espacials Catalunya IEEC, Spain.
    Gamma-ray observations of MAXI J1820+070 during the 2018 outburst2022In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 517, no 4, p. 4736-4751Article in journal (Refereed)
    Abstract [en]

    MAXIJ1820+070 is a low-mass X-ray binary with a black hole (BH) as a compact object. This binary underwent an exceptionally bright X-ray outburst from 2018 March to October, showing evidence of a non-thermal particle population through its radio emission during this whole period. The combined results of 59.5 h of observations of the MAXI J1820+070 outburst with the H.E.S.S., MAGIC and VERITAS experiments at energies above 200 GeV are presented, together with Fermi-LAT data between 0.1 and 500 GeV, and multiwavelength observations from radio to X-rays. Gamma-ray emission is not detected from MAXI J1820+070, but the obtained upper limits and the multiwavelength data allow us to put meaningful constraints on the source properties under reasonable assumptions regarding the non-thermal particle population and the jet synchrotron spectrum. In particular, it is possible to show that, if a high-energy (HE) gamma-ray emitting region is present during the hard state of the source, its predicted flux should be at most a factor of 20 below the obtained Fermi-LAT upper limits, and closer to them for magnetic fields significantly below equipartition. During the state transitions, under the plausible assumption that electrons are accelerated up to similar to 500 GeV, the multiwavelength data and the gamma-ray upper limits lead consistently to the conclusion that a potential HE and very-HE gamma-ray emitting region should be located at a distance from the BH ranging between 10(11) and 10(13) cm. Similar outbursts from low-mass X-ray binaries might be detectable in the near future with upcoming instruments such as CTA.

  • 58.
    Abeysekara, A. U.
    et al.
    University of Utah, USA.
    Archambault, S.
    McGill University, Canada.
    Archer, A.
    Washington University in St. Louis, USA.
    Benbow, W.
    Smithsonian Astrophysical Observatory, USA.
    Bird, R.
    University College Dublin, Ireland.
    Buchovecky, M.
    University of California Los Angeles, USA.
    Buckley, J. H.
    Washington University in St. Louis, USA.
    Bugaev, V.
    Washington University in St. Louis, USA.
    Byrum, K.
    Argonne National Laboratory, USA.
    Cerruti, M.
    Smithsonian Astrophysical Observatory, USA.
    Chen, X.
    Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany.;DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Ciupik, L.
    Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA..
    Cui, W.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA.;Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.;Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China..
    Dickinson, H. J.
    Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA..
    Eisch, J. D.
    Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA..
    Errando, M.
    Washington Univ, Dept Phys, St Louis, MO 63130 USA.;Columbia Univ, Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA..
    Falcone, A.
    Penn State Univ, Davey Lab 525, Dept Astron & Astrophys, University Pk, PA 16802 USA..
    Feng, Q.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA..
    Finley, J. P.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA..
    Fleischhack, H.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Fortson, L.
    Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA..
    Furniss, A.
    Calif State Univ East Bay, Dept Phys, Hayward, CA 94542 USA..
    Gillanders, G. H.
    Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland..
    Griffin, S.
    McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada..
    Grube, J.
    Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA..
    Hutten, M.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Hakansson, N.
    Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany..
    Hanna, D.
    McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada..
    Holder, J.
    Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA.;Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA..
    Humensky, T. B.
    Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA..
    Johnson, C. A.
    Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.;Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA..
    Kaaret, P.
    Univ Iowa, Dept Phys & Astron, Van Allen Hall, Iowa City, IA 52242 USA..
    Kar, P.
    Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA..
    Kertzman, M.
    Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA..
    Kieda, D.
    Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA..
    Krause, M.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Krennrich, F.
    Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA..
    Kumar, S.
    Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA.;Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA..
    Lang, M. J.
    Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland..
    Maier, G.
    DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    McArthur, S.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA..
    McCann, A.
    McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada..
    Meagher, K.
    Georgia Inst Technol, Sch Phys, 837 State St NW, Atlanta, GA 30332 USA.;Georgia Inst Technol, Ctr Relativist Astrophys, 837 State St NW, Atlanta, GA 30332 USA..
    Moriarty, P.
    Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland..
    Mukherjee, R.
    Columbia Univ, Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA..
    Nguyen, T.
    Georgia Inst Technol, Sch Phys, 837 State St NW, Atlanta, GA 30332 USA.;Georgia Inst Technol, Ctr Relativist Astrophys, 837 State St NW, Atlanta, GA 30332 USA..
    Nieto, D.
    Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA..
    Ong, R. A.
    Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA..
    Otte, A. N.
    Georgia Inst Technol, Sch Phys, 837 State St NW, Atlanta, GA 30332 USA.;Georgia Inst Technol, Ctr Relativist Astrophys, 837 State St NW, Atlanta, GA 30332 USA..
    Park, N.
    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
    Pelassa, V.
    Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA..
    Pohl, M.
    Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany.;DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Popkow, A.
    Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA..
    Pueschel, E.
    Univ Coll Dublin, Sch Phys, Dublin 4, Ireland..
    Quinn, J.
    Univ Coll Dublin, Sch Phys, Dublin 4, Ireland..
    Ragan, K.
    McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada..
    Reynolds, P. T.
    Cork Inst Technol, Dept Phys Sci, Cork, Ireland..
    Richards, G. T.
    Georgia Inst Technol, Sch Phys, 837 State St NW, Atlanta, GA 30332 USA.;Georgia Inst Technol, Ctr Relativist Astrophys, 837 State St NW, Atlanta, GA 30332 USA..
    Roache, E.
    Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA..
    Rulten, C.
    Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA..
    Santander, M.
    Columbia Univ, Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA..
    Sembroski, G. H.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA..
    Shahinyan, K.
    Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA..
    Staszak, D.
    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
    Telezhinsky, I.
    Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany.;DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Tucci, J. V.
    Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA..
    Tyler, J.
    McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada..
    Wakely, S. P.
    Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA..
    Weiner, O. M.
    Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA..
    Weinstein, A.
    Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA..
    Wilhelm, A.
    Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany.;DESY, Platanenallee 6, D-15738 Zeuthen, Germany..
    Williams, D. A.
    Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.;Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA..
    Fegan, S.
    Univ Paris Saclay, CNRS, IN2P3, Lab Leprince Ringuet,Ecole Polytech, F-91128 Palaiseau, France..
    Giebels, B.
    Univ Paris Saclay, CNRS, IN2P3, Lab Leprince Ringuet,Ecole Polytech, F-91128 Palaiseau, France..
    Horan, D.
    Univ Paris Saclay, CNRS, IN2P3, Lab Leprince Ringuet,Ecole Polytech, F-91128 Palaiseau, France..
    Berdyugin, A.
    Univ Turku, Dept Phys & Astron, Tuorla Observ, Turku, Finland..
    Kuan, J.
    Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA..
    Lindfors, E.
    Univ Turku, Dept Phys & Astron, Tuorla Observ, Turku, Finland..
    Nilsson, K.
    Univ Turku, Finnish Ctr Astron ESO, Turku, Finland..
    Oksanen, A.
    Jyvaskylan Sirius Ry, Nyrola Observ, Palokka, Finland..
    Prokoph, Heike
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Reinthal, R.
    Univ Turku, Dept Phys & Astron, Tuorla Observ, Turku, Finland..
    Takalo, L.
    Univ Turku, Dept Phys & Astron, Tuorla Observ, Turku, Finland..
    Zefi, F.
    Univ Paris Saclay, CNRS, IN2P3, Lab Leprince Ringuet,Ecole Polytech, F-91128 Palaiseau, France..
    A Luminous and Isolated Gamma-Ray Flare from the Blazar B2 1215+302017In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 836, no 2, article id 205Article in journal (Refereed)
    Abstract [en]

    B2 1215+30 is a BL-Lac-type blazar that was first detected at TeV energies by the MAGIC atmospheric Cherenkov telescopes and subsequently confirmed by the Very Energetic Radiation Imaging Telescope Array System (VERITAS) observatory with data collected between 2009 and 2012. In 2014 February 08, VERITAS detected a large-amplitude flare from B2. 1215+30 during routine monitoring observations of the blazar 1ES. 1218+304, located in the same field of view. The TeV flux reached 2.4 times the Crab Nebula flux with a variability timescale of <3.6 hr. Multiwavelength observations with Fermi-LAT, Swift, and the Tuorla Observatory revealed a correlated high GeV flux state and no significant optical counterpart to the flare, with a spectral energy distribution where the gamma-ray luminosity exceeds the synchrotron luminosity. When interpreted in the framework of a onezone leptonic model, the observed emission implies a high degree of beaming, with Doppler factor delta > 10, and an electron population with spectral index p < 2.3.

  • 59.
    Abramowski, A.
    et al.
    Univ Hamburg, Germany.
    Acero, F.
    Univ Paris Diderot, France.
    Aharonian, F.
    Max Planck Inst Kernphys, Germany ; Dublin Inst Adv Studies, Ireland ; Natl Acad Sci Republ Armenia, Armenia.
    Benkhali, F. Ait
    Max Planck Inst Kernphys, Germany.
    Akhperjanian, A. G.
    Natl Acad Sci Republ Armenia, Armenia ; Yerevan Phys Inst, Armenia.
    Anguner, E.
    Humboldt Univ, Germany.
    Anton, G.
    Univ Erlangen Nurnberg, Germany.
    Balenderan, S.
    Univ Durham, UK.
    Balzer, A.
    DESY, Germany ; Univ Potsdam, Germany.
    Barnacka, A.
    Nicolaus Copernicus Astron Ctr, Poland.
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Tjus, J. Becker
    Bernloehr, K.
    Birsin, E.
    Bissaldi, E.
    Biteau, J.
    Boettcher, M.
    Boisson, C.
    Bolmont, J.
    Bordas, P.
    Brucker, J.
    Brun, F.
    Brun, P.
    Bulik, T.
    Carrigan, S.
    Casanova, S.
    Cerruti, M.
    Chadwick, P. M.
    Chalme-Calvet, R.
    Chaves, R. C. G.
    Cheesebrough, A.
    Chretien, M.
    Clapson, A. -C
    Colafrancesco, S.
    Cologna, G.
    Conrad, J.
    Couturier, C.
    Cui, Y.
    Dalton, M.
    Daniel, M. K.
    Davids, I. D.
    Degrange, B.
    Deil, C.
    deWilt, P.
    Dickinson, H. J.
    Djannati-Atai, A.
    Domainko, W.
    Drury, L. O 'C.
    Dubus, G.
    Dutson, K.
    Dyks, J.
    Dyrda, M.
    Edwards, T.
    Egberts, K.
    Eger, P.
    Espigat, P.
    Farnier, C.
    Fegan, S.
    Feinstein, F.
    Fernandes, M. V.
    Fernandez, D.
    Fiasson, A.
    Fontaine, G.
    Foerster, A.
    Fuessling, M.
    Gajdus, M.
    Gallant, Y. A.
    Garrigoux, T.
    Giavitto, G.
    Giebels, B.
    Glicenstein, J. F.
    Grondin, M. -H
    Grudzinska, M.
    Haeffner, S.
    Hahn, J.
    Harris, J.
    Heinzelmann, G.
    Henri, G.
    Hermann, G.
    Hervet, O.
    Hillert, A.
    Hinton, J. A.
    Hofmann, W.
    Hofverberg, P.
    Holler, M.
    Horns, D.
    Jacholkowska, A.
    Jahn, C.
    Jamrozy, M.
    Janiak, M.
    Jankowsky, F.
    Jung, I.
    Kastendieck, M. A.
    Katarzynski, K.
    Katz, U.
    Kaufmann, S.
    Khelifi, B.
    Kieffer, M.
    Klepser, S.
    Klochkov, D.
    Kluzniak, W.
    Kneiske, T.
    Kolitzus, D.
    Komin, Nu.
    Kosack, K.
    Krakau, S.
    Krayzel, F.
    Krueger, P. P.
    Laffon, H.
    Lamanna, G.
    Lefaucheur, J.
    Lemiere, A.
    Lemoine-Goumard, M.
    Lenain, J. -P
    Lennarz, D.
    Lohse, T.
    Lopatin, A.
    Lu, C. -C
    Marandon, V.
    Marcowith, A.
    Marx, R.
    Maurin, G.
    Maxted, N.
    Mayer, M.
    McComb, T. J. L.
    Mehault, J.
    Meintjes, P. J.
    Menzler, U.
    Meyer, M.
    Moderski, R.
    Mohamed, M.
    Moulin, E.
    Murach, T.
    Naumann, C. L.
    de Naurois, M.
    Niemiec, J.
    Nolan, S. J.
    Oakes, L.
    Ohm, S.
    Wilhelmi, E. de Ona
    Opitz, B.
    Ostrowski, M.
    Oya, I.
    Panter, M.
    Parsons, R. D.
    Arribas, M. Paz
    Pekeur, N. W.
    Pelletier, G.
    Perez, J.
    Petrucci, P. -O
    Peyaud, B.
    Pita, S.
    Poon, H.
    Puehlhofer, G.
    Punch, Michael
    Univ Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France.
    Quirrenbach, A.
    Raab, S.
    Raue, M.
    Reimer, A.
    Reimer, O.
    Renaud, M.
    de los Reyes, R.
    Rieger, F.
    Rob, L.
    Romoli, C.
    Rosier-Lees, S.
    Rowell, G.
    Rudak, B.
    Rulten, C. B.
    Sahakian, V.
    Sanchez, D. A.
    Santangelo, A.
    Schlickeiser, R.
    Schuessler, F.
    Schulz, A.
    Schwanke, U.
    Schwarzburg, S.
    Schwemmer, S.
    Sol, H.
    Spengler, G.
    Spies, F.
    Stawarz, L.
    Steenkamp, R.
    Stegmann, C.
    Stinzing, F.
    Stycz, K.
    Sushch, I.
    Szostek, A.
    Tavernet, J. -P
    Tavernier, T.
    Taylor, A. M.
    Terrier, R.
    Tluczykont, M.
    Trichard, C.
    Valerius, K.
    van Eldik, C.
    van Soelen, B.
    Vasileiadis, G.
    Venter, C.
    Viana, A.
    Vincent, P.
    Voelk, H. J.
    Volpe, F.
    Vorster, M.
    Vuillaume, T.
    Wagner, S. J.
    Wagner, P.
    Ward, M.
    Weidinger, M.
    Weitzel, Q.
    White, R.
    Wierzcholska, A.
    Willmann, P.
    Woernlein, A.
    Wouters, D.
    Zabalza, V.
    Zacharias, M.
    Zajczyk, A.
    Zdziarski, A. A.
    Zech, A.
    Zechlin, H. -S
    Discovery of the VHE gamma-ray source HESS J1832-093 in the vicinity of SNR G22.7-0.22015In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 446, no 2, p. 1163-1169Article in journal (Refereed)
    Abstract [en]

    The region around the supernova remnant (SNR) W41 contains several TeV sources and has prompted the HESS Collaboration to perform deep observations of this field of view. This resulted in the discovery of the new very high energy (VHE) source HESS J1832-093, at the position RA = 18(h)32(m)50(s) +/- 3(stat)(s) +/- 2(syst)(s), Dec = -9 degrees 22'36 '' +/- 32(stat)'' +/- 20(syst)'' (J2000), spatially coincident with a part of the radio shell of the neighbouring remnant G22.7-0.2. The photon spectrum is well described by a power law of index Gamma = 2.6 +/- 0.3(stat) +/- 0.1(syst) and a normalization at 1 TeV of Phi(0) = (4.8 +/- 0.8(stat) +/- 1.0(syst)) x 10(-13) cm(-2) s(-1) TeV-1. The location of the gamma-ray emission on the edge of the SNR rim first suggested a signature of escaping cosmic rays illuminating a nearby molecular cloud. Then a dedicated XMM-Newton observation led to the discovery of a new X-ray point source spatially coincident with the TeV excess. Two other scenarios were hence proposed to identify the nature of HESS J1832-093. Gamma-rays from inverse Compton radiation in the framework of a pulsar wind nebula scenario or the possibility of gamma-ray production within a binary system are therefore also considered. Deeper multiwavelength observations will help to shed new light on this intriguing VHE source.

  • 60.
    Abramowski, A.
    et al.
    Universität Hamburg, Germany .
    Aharonian, F.
    Max-Planck-Institut für Kernphysik, Germany ; Dublin Institute for Advanced Studies, Ireland ; National Academy of Sciences of the Republic of Armenia, Armenia .
    Ait Benkhali, F.
    Max-Planck-Institut für Kernphysik, Germany .
    Akhperjanian, A. G.
    National Academy of Sciences of the Republic of Armenia, Armenia ; Yerevan Physics Institute, Armenia.
    Angüner, E. O.
    Humboldt-Universität zu Berlin, Germany.
    Backes, M.
    University of Namibia, Namibia .
    Balzer, A.
    University of Amsterdam, The Netherlands .
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Becker Tjus, J.
    Ruhr-Universität Bochum, Germany .
    Berge, D.
    University of Amsterdam, The Netherlands .
    Bernhard, S.
    Leopold-Franzens-Universität Innsbruck, Austria.
    Bernlöhr, K.
    Max-Planck-Institut für Kernphysik, Germany.
    Birsin, E.
    Humboldt-Universität zu Berlin, Germany.
    Blackwell, R.
    University of Adelaide, Australia .
    Böttcher, M.
    North-West University, South Africa .
    Boisson, C.
    Université Paris Diderot, France.
    Bolmont, J.
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Bordas, P.
    Max-Planck-Institut für Kernphysik, Germany.
    Bregeon, J.
    Université Montpellier 2, France.
    Brun, F.
    CEA Saclay, France.
    Brun, P.
    CEA Saclay, France.
    Bryan, M.
    University of Amsterdam, The Netherlands .
    Bulik, T.
    The University of Warsaw, Poland.
    Carr, J.
    Aix-Marseille Université, France.
    Casanova, S.
    Max-Planck-Institut für Kernphysik, Germany ; Instytut Fizyki Jądrowej PAN, Poland.
    Chakraborty, N.
    Max-Planck-Institut für Kernphysik, Germany.
    Chalme-Calvet, R.
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Chaves, R. C. G.
    Université Montpellier 2, France.
    Chen, A.
    University of the Witwatersrand, South Africa .
    Chrétien, M.
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Colafrancesco, S.
    University of the Witwatersrand, South Africa.
    Cologna, G.
    Universität Heidelberg, Germany .
    Conrad, J.
    Stockholm University, Sweden.
    Couturier, C.
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Cui, Y.
    Universität Tübingen, Germany.
    Davids, I. D.
    North-West University, South Africa ; University of Namibia, Namibia.
    Degrange, B.
    École Polytechnique, France.
    Deil, C.
    Max-Planck-Institut für Kernphysik, Germany.
    deWilt, P.
    University of Adelaide, Australia .
    Djannati-Ataï, A.
    Université Paris Diderot, France.
    Domainko, W.
    Max-Planck-Institut für Kernphysik, Germany.
    Donath, A.
    Max-Planck-Institut für Kernphysik, Germany.
    O’C. Drury, L.
    Dublin Institute for Advanced Studies, Ireland.
    Dubus, G.
    Univ. Grenoble Alpes, France.
    Dutson, K.
    The University of Leicester, UK.
    Dyks, J.
    Nicolaus Copernicus Astronomical Center, Poland.
    Dyrda, M.
    Instytut Fizyki Jądrowej PAN, Poland.
    Edwards, T.
    Max-Planck-Institut für Kernphysik, Germany.
    Egberts, K.
    Universität Potsdam, Germany.
    Eger, P.
    Max-Planck-Institut für Kernphysik, Germany.
    Ernenwein, J. -P
    Aix-Marseille Université, France.
    Espigat, P.
    Université Paris Diderot, France.
    Farnier, C.
    Stockholm University, Sweden.
    Fegan, S.
    École Polytechnique, France.
    Feinstein, F.
    Université Montpellier 2, France.
    Fernandes, M. V.
    Universität Hamburg, Germany.
    Fernandez, D.
    Université Montpellier 2, France.
    Fiasson, A.
    Université Savoie Mont-Blanc, France.
    Fontaine, G.
    École Polytechnique, France.
    Förster, A.
    Max-Planck-Institut für Kernphysik, Germany.
    Füßling, M.
    DESY, Germany.
    Gabici, S.
    Université Paris Diderot, France.
    Gajdus, M.
    Humboldt-Universität zu Berlin, Germany.
    Gallant, Y. A.
    Université Montpellier 2, France.
    Garrigoux, T.
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Giavitto, G.
    DESY, Germany.
    Giebels, B.
    École Polytechnique, France.
    Glicenstein, J. F.
    DSM/Irfu, France.
    Gottschall, D.
    Universität Tübingen, Germany.
    Goyal, A.
    Uniwersytet Jagielloński, Poland.
    Grondin, M. -H
    Université Bordeaux, France.
    Grudzi´nska, M.
    The University of Warsaw, Poland.
    Hadasch, D.
    Leopold-Franzens-Universität Innsbruck, Austria.
    Häffner, S.
    Universität Erlangen-Nürnberg, Germany.
    Hahn, J.
    Max-Planck-Institut für Kernphysik, Germany.
    Hawkes, J.
    University of Adelaide, Australia .
    Heinzelmann, G.
    Universität Hamburg, Germany.
    Henri, G.
    Univ. Grenoble Alpes, France.
    Hermann, G.
    Max-Planck-Institut für Kernphysik, Germany.
    Hervet, O.
    Université Paris Diderot, France.
    Hillert, A.
    Max-Planck-Institut für Kernphysik, Germany.
    Hinton, J. A.
    Max-Planck-Institut für Kernphysik, Germany.
    Hofmann, W.
    The University of Leicester, UK.
    Hofverberg, P.
    Max-Planck-Institut für Kernphysik, Germany.
    Hoischen, C.
    Universität Potsdam, Germany.
    Holler, M.
    École Polytechnique, France.
    Horns, D.
    Universität Hamburg, Germany.
    Ivascenko, A.
    North-West University, South Africa .
    Jacholkowska, A.
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Jahn, C.
    Universität Erlangen-Nürnberg, Germany.
    Jamrozy, M.
    DESY, Germany.
    Janiak, M.
    Nicolaus Copernicus Astronomical Center, Poland.
    Jankowsky, F.
    Universität Heidelberg, Germany.
    Jung-Richardt, I.
    Universität Erlangen-Nürnberg, Germany.
    Kastendieck, M. A.
    Universität Hamburg, Germany.
    Katarzy´nski, K.
    Nicolaus Copernicus University, Poland.
    Katz, U.
    Universität Erlangen-Nürnberg, Germany.
    Kerszberg, D.
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Khélifi, B.
    Université Paris Diderot, France.
    Kieffer, M.
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Klepser, S.
    DESY, Germany.
    Klochkov, D.
    Universität Tübingen, Germany.
    Klu´zniak, W.
    Nicolaus Copernicus Astronomical Center, Poland.
    Kolitzus, D.
    Leopold-Franzens-Universität Innsbruck, Austria.
    Komin, N.
    University of the Witwatersrand, South Africa.
    Kosack, K.
    DSM/Irfu, France.
    Krakau, S.
    University of Amsterdam, The Netherlands .
    Krayzel, F.
    Université Savoie Mont-Blanc, France.
    Krüger, P. P.
    North-West University, South Africa.
    Laffon, H.
    Université Bordeaux, France.
    Lamanna, G.
    Université Savoie Mont-Blanc, France.
    Lau, J.
    University of Adelaide, Australia .
    Lefaucheur, J.
    Université Paris Diderot, France.
    Lefranc, V.
    DSM/Irfu, France.
    Lemière, A.
    Université Paris Diderot, France.
    Lemoine-Goumard, M.
    Université Bordeaux, France.
    Lenain, J. -P
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Lohse, T.
    Humboldt-Universität zu Berlin, Germany.
    Lopatin, A.
    Universität Erlangen-Nürnberg, Germany.
    Lu, C. -C
    Max-Planck-Institut für Kernphysik, Germany.
    Lui, R.
    Max-Planck-Institut für Kernphysik, Germany.
    Marandon, V.
    Max-Planck-Institut für Kernphysik, Germany.
    Marcowith, A.
    Université Montpellier 2, France.
    Mariaud, C.
    École Polytechnique, France.
    Marx, R.
    Max-Planck-Institut für Kernphysik, Germany.
    Maurin, G.
    Université Savoie Mont-Blanc, France.
    Maxted, N.
    Université Montpellier 2, France.
    Mayer, M.
    Yerevan Physics Institute, Armenia.
    Meintjes, P. J.
    University of the Free State, South Africa .
    Menzler, U.
    Ruhr-Universität Bochum, Germany.
    Meyer, M.
    Stockholm University, Sweden.
    Mitchell, A. M. W.
    Max-Planck-Institut für Kernphysik, Germany.
    Moderski, R.
    Nicolaus Copernicus Astronomical Center, Poland.
    Mohamed, M.
    Universität Heidelberg, Germany.
    Morå, K.
    Stockholm University, Sweden.
    Moulin, E.
    DSM/Irfu, France.
    Murach, T.
    Humboldt-Universität zu Berlin, Germany.
    de Naurois, M.
    École Polytechnique, France.
    Niemiec, J.
    Instytut Fizyki Jądrowej PAN, Poland.
    Oakes, L.
    Humboldt-Universität zu Berlin, Germany.
    Odaka, H.
    Universität Hamburg, Institut für Experimentalphysik, Germany.
    Öttl, S.
    Leopold-Franzens-Universität Innsbruck, Austria .
    Ohm, S.
    DESY, Germany.
    de Oña Wilhelmi, E.
    Max-Planck-Institut für Kernphysik,, Germany ; Now at Institut de Ciències de l’Espai, Spain.
    Opitz, B.
    Universität Hamburg, Germany.
    Ostrowski, M.
    Uniwersytet Jagielloński, Poland.
    Oya, I.
    DESY, Germany.
    Panter, M.
    Max-Planck-Institut für Kernphysik, Germany.
    Parsons, R. D.
    Max-Planck-Institut für Kernphysik, Germany.
    Arribas, M. P.
    Humboldt-Universität zu Berlin, Germany.
    Pekeur, N. W.
    North-West University, Spain.
    Pelletier, G.
    Univ. Grenoble Alpes, France.
    Petrucci, P. -O
    Univ. Grenoble Alpes, France.
    Peyaud, B.
    DSM/Irfu, France.
    Pita, S.
    Université Paris Diderot, France.
    Poon, H.
    Max-Planck-Institut für Kernphysik, Germany.
    Prokoph, Heike
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Pühlhofer, G.
    Universität Tübingen, Germany.
    Punch, Michael
    Université Paris Diderot, France.
    Quirrenbach, A.
    Universität Heidelberg, Germany.
    Raab, S.
    Universität Erlangen-Nürnberg, Germany.
    Reichardt, I.
    Université Paris Diderot, France.
    Reimer, A.
    Leopold-Franzens-Universität Innsbruck, Austria.
    Reimer, O.
    Leopold-Franzens-Universität Innsbruck, Austria.
    Renaud, M.
    Université Montpellier 2, France.
    de los Reyes, R.
    Max-Planck-Institut für Kernphysik, Germany.
    Rieger, F.
    Max-Planck-Institut für Kernphysik, Germany ; ITA Universität Heidelberg, Germany .
    Romoli, C.
    Dublin Institute for Advanced Studies, Ireland.
    Rosier-Lees, S.
    Université Savoie Mont-Blanc, France.
    Rowell, G.
    University of Adelaide, Australia .
    Rudak, B.
    Nicolaus Copernicus Astronomical Center, Poland.
    Rulten, C. B.
    Université Paris Diderot, France.
    Sahakian, V.
    Yerevan Physics Institute, Armenia ; National Academy of Sciences of the Republic of Armenia, Armenia.
    Salek, D.
    University of Amsterdam, The Netherlands .
    Sanchez, D. A.
    Université Savoie Mont-Blanc, France.
    Santangelo, A.
    Universität Tübingen, Germany.
    Sasaki, M.
    Universität Tübingen, Germany.
    Schlickeiser, R.
    Ruhr-Universität Bochum, Germany.
    Schüssler, F.
    DSM/Irfu, France.
    Schulz, A.
    DESY, Germany.
    Schwanke, U.
    Humboldt-Universität zu Berlin, Germany.
    Schwemmer, S.
    Universität Heidelberg, Germany.
    Seyffert, A. S.
    North-West University, South Africa .
    Simoni, R.
    University of Amsterdam, The Netherlands .
    Sol, H.
    Université Paris Diderot, France.
    Spanier, F.
    North-West University, South Africa.
    Spengler, G.
    Stockholm University, Sweden.
    Spies, F.
    Universität Hamburg, Germany.
    Stawarz, \L.
    Uniwersytet Jagielloński, Poland.
    Steenkamp, R.
    University of Namibia, Namibia.
    Stegmann, C.
    Universität Potsdam, Germany ; DESY, Germany.
    Stinzing, F.
    Universität Erlangen-Nürnberg, Germany.
    Stycz, K.
    DESY, Germany.
    Sushch, I.
    North-West University, South Africa .
    Tavernet, J. -P
    Université Denis Diderot Paris 7, France.
    Tavernier, T.
    Université Paris Diderot, France.
    Taylor, A. M.
    Dublin Institute for Advanced Studies, Ireland.
    Terrier, R.
    Université Paris Diderot, France.
    Tluczykont, M.
    Universität Hamburg, Germany.
    Trichard, C.
    Université Savoie Mont-Blanc, France.
    Valerius, K.
    Universität Erlangen-Nürnberg, Germany.
    van der Walt, J.
    North-West University, South Africa .
    van Eldik, C.
    Universität Erlangen-Nürnberg, Germany.
    van Soelen, B.
    University of the Free State, South Africa .
    Vasileiadis, G.
    Université Montpellier 2, France.
    Veh, J.
    Universität Erlangen-Nürnberg, Germany.
    Venter, C.
    North-West University, South Africa.
    Viana, A.
    Max-Planck-Institut für Kernphysik, Germany.
    Vincent, P.
    Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, France.
    Vink, J.
    University of Amsterdam, The Netherlands.
    Voisin, F.
    University of Adelaide, Australia .
    Völk, H. J.
    Max-Planck-Institut für Kernphysik, Germany.
    Vuillaume, T.
    University of the Free State, South Africa .
    Wagner, S. J.
    Universität Heidelberg, Germany.
    Wagner, P.
    Humboldt-Universität zu Berlin, Germany.
    Wagner, R. M.
    Stockholm University, Sweden.
    Weidinger, M.
    Ruhr-Universität Bochum, Germany.
    Weitzel, Q.
    Max-Planck-Institut für Kernphysik, Germany.
    White, R.
    The University of Leicester, UK.
    Wierzcholska, A.
    Universität Heidelberg, Germany .
    Willmann, P.
    Universität Erlangen-Nürnberg, Germany.
    Wörnlein, A.
    Universität Erlangen-Nürnberg, Germany.
    Wouters, D.
    DSM/Irfu, France.
    Yang, R.
    Max-Planck-Institut für Kernphysik, Germany.
    Zabalza, V.
    The University of Leicester, UK.
    Zaborov, D.
    École Polytechnique, France.
    Zacharias, M.
    Universität Heidelberg, Germany.
    Zdziarski, A. A.
    Nicolaus Copernicus Astronomical Center, Poland.
    Zech, A.
    Université Paris Diderot, France.
    Zefi, F.
    École Polytechnique, France.
    Zywucka, N.
    Uniwersytet Jagielloński, Poland.
    Discovery of variable VHE gamma-ray emission from the binary system 1FGL J1018.6-58562015In: Astronomy and Astrophysics Supplement Series, ISSN 0365-0138, E-ISSN 1286-4846, Vol. 577, article id A131Article in journal (Refereed)
    Abstract [en]

    Re-observations with the HESS telescope array of the very high-energy (VHE) source HESS J1018-589 A that is coincident with the Fermi-LAT γ-ray binary 1FGL J1018.6-5856 have resulted in a source detection significance of more than 9σ and the detection of variability (χ$^2$/ν of 238.3/155) in the emitted γ-ray flux. This variability confirms the association of HESS J1018-589 A with the high-energy γ-ray binary detected by Fermi-LAT and also confirms the point-like source as a new VHE binary system. The spectrum of HESS J1018-589 A is best fit with a power-law function with photon index Γ = 2.20 \plusmn 0.14$_stat$ \plusmn 0.2$_sys$. Emission is detected up to ~20 TeV. The mean differential flux level is (2.9 \plusmn 0.4) \times 10$^-13$ TeV$^-1$ cm$^-2$ s$^-1$ at 1 TeV, equivalent to ~1% of the flux from the Crab Nebula at the same energy. Variability is clearly detected in the night-by-night light curve. When folded on the orbital period of 16.58 days, the rebinned light curve peaks in phase with the observed X-ray and high-energy phaseograms. The fit of the HESS phaseogram to a constant flux provides evidence of periodicity at the level of N$_sigma$\gt 3σ. The shape of the VHE phaseogram and measured spectrum suggest a low-inclination, low-eccentricity system with amodest impact from VHE γ-ray absorption due to pair production (τ \lsim 1 at 300 GeV).

  • 61.
    Abramowski, A.
    et al.
    Univ Hamburg, Inst Experimentalphys, D-22761 Hamburg, Germany.
    Aharonian, F.
    Max Planck Inst Kernphys, D-69029 Heidelberg, Germany ; Dublin Inst Adv Studies, Dublin 4, Ireland ; Natl Acad Sci Republ Armenia, Yerevan, Armenia .
    Benkhali, F. Ait
    Max Planck Inst Kernphys, D-69029 Heidelberg, Germany.
    Akhperjanian, A. G.
    Natl Acad Sci Republ Armenia, Yerevan, Armenia ; Yerevan Phys Inst, Yerevan 375036, Armenia.
    Anguener, E.
    Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
    Anton, G.
    Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany.
    Backes, M.
    Univ Namibia, Dept Phys, Windhoek, Namibia.
    Balenderan, S.
    Univ Durham, Dept Phys, Durham DH1 3LE, England.
    Balzer, A.
    DESY, D-15738 Zeuthen, Germany ; Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany.
    Barnacka, A.
    Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland.
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland.
    Tjus, J. Becker
    Bernlhr, K.
    Birsin, E.
    Bissaldi, E.
    Biteau, J.
    Boettcher, M.
    Boisson, C.
    Bolmont, J.
    Bordas, P.
    Brucker, J.
    Brun, F.
    Brun, P.
    Bulik, T.
    Carrigan, S.
    Casanova, S.
    Chadwick, P. M.
    Chalme-Calvet, R.
    Chaves, R. C. G.
    Cheesebrough, A.
    Chretien, M.
    Colafrancesco, S.
    Cologna, G.
    Conrad, J.
    Couturier, C.
    Cui, Y.
    Dalton, M.
    Daniel, M. K.
    Davids, I. D.
    Degrange, B.
    Deil, C.
    deWilt, P.
    Dickinson, H. J.
    Djannati-Atai, A.
    Domainko, W.
    Drury, L. O 'C.
    Dubus, G.
    Dutson, K.
    Dyks, J.
    Dyrda, M.
    Edwards, T.
    Egberts, K.
    Eger, P.
    Espigat, P.
    Farnier, C.
    Fegan, S.
    Feinstein, F.
    Fernandes, M. V.
    Fernandez, D.
    Fiasson, A.
    Fontaine, G.
    Foerster, A.
    Fuessling, M.
    Gajdus, M.
    Gallant, Y. A.
    Garrigoux, T.
    Giavitto, G.
    Giebels, B.
    Glicenstein, J. F.
    Grondin, M. -H
    Grudzinska, M.
    Haeffner, S.
    Hahn, J.
    Harris, J.
    Heinzelmann, G.
    Henri, G.
    Hermann, G.
    Hervet, O.
    Hillert, A.
    Hinton, J. A.
    Hofmann, W.
    Hofverberg, P.
    Holler, M.
    Horns, D.
    Jacholkowska, A.
    Jahn, C.
    Jamrozy, M.
    Janiak, M.
    Jankowsky, F.
    Jung, I.
    Kastendieck, M. A.
    Katarzynski, K.
    Katz, U.
    Kaufmann, S.
    Khelifi, B.
    Kieffer, M.
    Klepser, S.
    Klochkov, D.
    Kluzniak, W.
    Kneiske, T.
    Kolitzus, D.
    Komin, Nu.
    Kosack, K.
    Krakau, S.
    Krayzel, F.
    Krueger, P. P.
    Laffon, H.
    Lamanna, G.
    Lefaucheur, J.
    Lemiere, A.
    Lemoine-Goumard, M.
    Lenain, J. -P
    Lohse, T.
    Lopatin, A.
    Lu, C. -C
    Marandon, V.
    Marcowith, A.
    Marx, R.
    Maurin, G.
    Maxted, N.
    Mayer, M.
    McComb, T. J. L.
    Mehault, J.
    Meintjes, P. J.
    Menzler, U.
    Meyer, M.
    Moderski, R.
    Mohamed, M.
    Moulin, E.
    Murach, T.
    Naumann, C. L.
    de Naurois, M.
    Niemiec, J.
    Nolan, S. J.
    Oakes, L.
    Odaka, H.
    Ohm, S.
    Wilhelmi, E. de Ona
    Opitz, B.
    Ostrowski, M.
    Oya, I.
    Panter, M.
    Parsons, R. D.
    Arribas, M. Paz
    Pekeur, N. W.
    Pelletier, G.
    Perez, J.
    Petrucci, P. -O
    Peyaud, B.
    Pita, S.
    Poon, H.
    Puehlhofer, G.
    Punch, Michael
    Univ Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France.
    Quirrenbach, A.
    Raab, S.
    Raue, M.
    Reichardt, I.
    Reimer, A.
    Reimer, O.
    Renaud, M.
    de los Reyes, R.
    Rieger, F.
    Rob, L.
    Romoli, C.
    Rosier-Lees, S.
    Rowell, G.
    Rudak, B.
    Rulten, C. B.
    Sahakian, V.
    Sanchez, D. A.
    Santangelo, A.
    Schlickeiser, R.
    Schuessler, F.
    Schulz, A.
    Schwanke, U.
    Schwarzburg, S.
    Schwemmer, S.
    Sol, H.
    Spengler, G.
    Spies, F.
    Stawarz, L.
    Steenkamp, R.
    Stegmann, C.
    Stinzing, F.
    Stycz, K.
    Sushch, I.
    Tavernet, J. -P
    Tavernier, T.
    Taylor, A. M.
    Terrier, R.
    Tluczykont, M.
    Trichard, C.
    Valerius, K.
    van Eldik, C.
    van Soelen, B.
    Vasileiadis, G.
    Venter, C.
    Viana, A.
    Vincent, P.
    Voelk, H. J.
    Volpe, F.
    Vorster, M.
    Vuillaume, T.
    Wagner, S. J.
    Wagner, P.
    Wagner, R. M.
    Ward, M.
    Weidinger, M.
    Weitzel, Q.
    White, R.
    Wierzcholska, A.
    Willmann, P.
    Wrnlein, A.
    Wouters, D.
    Yang, R.
    Zabalza, V.
    Zacharias, M.
    Zdziarski, A. A.
    Zech, A.
    Zechlin, H. -S
    Finke, J.
    Fortin, P.
    Horan, D.
    The high-energy gamma-ray emission of AP Librae2015In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 573, article id A31Article in journal (Refereed)
    Abstract [en]

    The gamma-ray spectrum of the low-frequency-peaked BL Lac (LBL) object AP Librae is studied, following the discovery of very-high-energy (VHE; E > 100 GeV) gamma-ray emission up to the TeV range by the H.E.S.S. experiment. Thismakes AP Librae one of the few VHE emitters of the LBL type. The measured spectrum yields a flux of (8.8 +/- 1.5(stat) +/- 1.8(sys)) x 10(-12) cm(-2) s(-1) above 130 GeV and a spectral index of Gamma = 2.65 +/- 0.19(stat) +/- 0.20(sys). This study also makes use of Fermi-LAT observations in the high energy (HE, E > 100 MeV) range, providing the longest continuous light curve (5 years) ever published on this source. The source underwent a flaring event between MJD 56 306-56 376 in the HE range, with a flux increase of a factor of 3.5 in the 14 day bin light curve and no significant variation in spectral shape with respect to the low-flux state. While the H.E.S.S. and (low state) Fermi-LAT fluxes are in good agreement where they overlap, a spectral curvature between the steep VHE spectrum and the Fermi-LAT spectrum is observed. The maximum of the gamma-ray emission in the spectral energy distribution is located below the GeV energy range.

  • 62. Abramowski, A.
    et al.
    Aharonian, F.
    Benkhali, F. Ait
    Akhperjanian, A. G.
    Anguener, E.
    Anton, G.
    Backes, M.
    Balenderan, S.
    Balzer, A.
    Barnacka, A.
    Becherini, Yvonne
    Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.
    Tjus, J. Becker
    Bernloehr, K.
    Birsin, E.
    Bissaldi, E.
    Biteau, J.
    Boettcher, M.
    Boisson, C.
    Bolmont, J.
    Bordas, P.
    Brucker, J.
    Brun, F.
    Brun, P.
    Bulik, T.
    Carrigan, S.
    Casanova, S.
    Chadwick, P. M.
    Chalme-Calvet, R.
    Chaves, R. C. G.
    Cheesebrough, A.
    Chretien, M.
    Colafrancesco, S.
    Cologna, G.
    Conrad, J.
    Couturier, C.
    Cui, Y.
    Djannati-Atai, A.
    Domainko, W.
    Drury, L. O 'C.
    Dubus, G.
    Dutson, K.
    Dyks, J.
    Dyrda, M.
    Edwards, T.
    Egberts, K.
    Eger, P.
    Espigat, P.
    Farnier, C.
    Fegan, S.
    Feinstein, F.
    Fernandes, M. V.
    Fernandez, D.
    Fiasson, A.
    Fontaine, G.
    Foerster, A.
    Fussling, M.
    Gajdus, M.
    Gallant, Y. A.
    Garrigoux, T.
    Giavitto, G.
    Giebels, B.
    Glicenstein, J. F.
    Grondin, M. -H
    Grudzinska, M.
    Haeffner, S.
    Hahn, J.
    Harris, J.
    Heinzelmann, G.
    Henri, G.
    Hermann, G.
    Hervet, O.
    Hillert, A.
    Hinton, J. A.
    Hofmann, W.
    Hofverberg, P.
    Holler, M.
    Horns, D.
    Jacholkowska, A.
    Jahn, C.
    Jamrozy, M.
    Janiak, M.
    Jankowsky, F.
    Jung, I.
    Kastendieck, M. A.
    Katarzynski, K.
    Katz, U.
    Kaufmann, S.
    Khelifi, B.
    Kieffer, M.
    Klepser, S.
    Klochkov, D.
    Kluzniak, W.
    Kneiske, T.
    Kolitzus, D.
    Komin, Nu.
    Kosack, K.
    Krakau, S.
    Krayzel, F.
    Krueger, P. P.
    Laffon, H.
    Lamanna, G.
    Lefaucheur, J.
    Lemiere, A.
    Lemoine-Goumard, M.
    Lenain, J. -P
    Lohse, T.
    Lopatin, A.
    Lu, C. -C
    Marandon, V.
    Marcowith, A.
    Marx, R.
    Maurin, G.
    Maxted, N.
    Mayer, M.
    McComb, T. J. L.
    Mehault, J.
    Meintjes, P. J.
    Menzler, U.
    Meyer, M.
    Moderski, R.
    Mohamed, M.
    Moulin, E.
    Murach, T.
    Naumann, C. L.
    de Naurois, M.
    Niemiec, J.
    Nolan, S. J.
    Oakes, L.
    Odaka, H.
    Ohm, S.
    Wilhelmi, E. de Ona
    Opitz, B.
    Ostrowski, M.
    Oya, I.
    Panter, M.
    Parsons, R. D.
    Arribas, M. Paz
    Pekeur, N. W.
    Pelletier, G.
    Perez, J.
    Petrucci, P. -O
    Peyaud, B.
    Pita, S.
    Poon, H.
    Puehlhofer, G.
    Punch, Michael
    Univ Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France.
    Quirrenbach, A.
    Raab, S.
    Raue, M.
    Reichardt, I.
    Reimer, A.
    Reimer, O.
    Renaud, M.
    Reyes, R. de los
    Rieger, F.
    Rob, L.
    Romoli, C.
    Rosier-Lees, S.
    Rowell, G.
    Rudak, B.
    Rulten, C. B.
    Sahakian, V.
    Sanchez, D. A.
    Santangelo, A.
    Schlickeiser, R.
    Schuessler, F.
    Schulz, A.
    Schwanke, U.
    Schwarzburg, S.
    Schwemmer, S.
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    Stegmann, C.
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    Search for extended gamma-ray emission around AGN with HESS and Fermi-LAT2014In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 562, p. A145-Article in journal (Refereed)
    Abstract [en]

    Context. Very-high-energy (VHE; E > 100 GeV) gamma-ray emission from blazars inevitably gives rise to electron-positron pair production through the interaction of these gamma-rays with the extragalactic background light (EBL). Depending on the magnetic fields in the proximity of the source, the cascade initiated from pair production can result in either an isotropic halo around an initially- beamed source or a magnetically- broadened cascade :aux. Aims. Both extended pair-halo (PH) and magnetically broadened cascade (MBC) emission from regions surrounding the blazars 1ES 1101-232, IRS 0229+200, and PKS 2155-304 were searched for using VHE y-ray data taken with the High Energy Stereoscopic System (HESS.) and high-energy (HE; 100 MeV < E < 100 GeV) gamma-ray data with the Fermi Large Area Telescope (LAT). Methods. By comparing the angular distributions of the reconstructed gamma-ray events to the angular profiles calculated from detailed theoretical models, the presence of PH and MBC was investigated. Results. Upper limits on the extended emission around lES 1101-232, lES 0229+200, and PKS 2155-304 are found to be at a level of a few per cent of the Crab nebula flux above 1 TeV, depending on the assumed photon index of the cascade emission. Assuming strong extra-Galactic magnetic field (EGME) values, >10(-12) G, this limits the production of pair haloes developing from electromagnetic cascades. For weaker magnetic fields, in which electromagnetic cascades would result in MBCs. EGMF strengths in the range (0.3-3) x 10(-15) G were excluded for PKS 2155-304 at the 99% confidence level, under the assumption of a 1 Mpc coherence length.

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