Searches for gamma-ray lines and &apos;pure WIMP&apos; spectra from Dark Matter annihilations in dwarf galaxies with HESS

Abdalla, H.; Aharonian, F.; Benkhali, F. Ait; Anguner, E. O.; Arakawa, M.; Arcaro, C.; Armand, C.; Arrieta, M.; Backes, M.; Barnard, M.; Becherini, Yvonne; Tjus, J. Becker; Berge, D.; Bernhard, S.; Bernloehr, K.; Blackwell, R.; Bottcher, M.; Boisson, C.; Bolmont, J.; Bonnefoy, S.; Bordas, P.; Bregeon, J.; Brun, F.; Brun, P.; Bryan, M.; Buechele, M.; Bulik, T.; Bylund, Tomas; Capasso, M.; Caroff, S.; Carosi, A.; Casanova, S.; Cerruti, M.; Chakraborty, N.; Chandra, S.; Chaves, R. C. G.; Chen, A.; Colafrancesco, S.; Condon, B.; Davids, I. D.; Deil, C.; Devin, J.; deWilt, P.; Dirson, L.; Djannati-Atai, A.; Dmytriiev, A.; Donath, A.; Doroshenko, V.; Drury, L. O 'C.; Dyks, J.; Egberts, K.; Emery, G.; Ernenwein, J. -P; Eschbach, S.; Fegan, S.; Fiasson, A.; Fontaine, G.; Funk, S.; Fuessling, M.; Gabici, S.; Gallant, Y. A.; Gate, F.; Giavitto, G.; Glawion, D.; Glicenstein, J. F.; Gottschall, D.; Grondin, M. -H; Hahn, J.; Haupt, M.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J. A.; Hofmann, W.; Hoischen, C.; Holch, T. L.; Holler, M.; Horns, D.; Huber, D.; Iwasaki, H.; Jacholkowska, A.; Jamrozy, M.; Jankowsky, D.; Jankowsky, F.; Jouvin, L.; Jung-Richardt, I.; Kastendieck, M. A.; Katarzynski, K.; Katsuragawa, M.; Katz, U.; Kerszberg, D.; Khangulyan, D.; Khelifi, B.; King, J.; Klepser, S.; Kluzniak, W.; Komin, Nu.; Kosack, K.; Krakau, S.; Kraus, M.; Kruger, P. P.; Lamanna, G.; Lau, J.; Lefaucheur, J.; Lemiere, A.; Lemoine-Goumard, M.; Lenain, J. -P; Leser, E.; Lohse, T.; Lorentz, M.; Lopez-Coto, R.; Lypova, I.; Malyshev, D.; Marandon, V.; Marcowith, A.; Mariaud, C.; Marti-Devesa, G.; Marx, R.; Maurin, G.; Meintjes, P. J.; Mitchell, A. M. W.; Moderski, R.; Mohamed, M.; Mohrmann, L.; Moulin, E.; Murach, T.; Nakashima, S.; de Naurois, M.; Ndiyavala, H.; Niederwanger, F.; Niemiec, J.; Oakes, L.; O'Brien, P.; Odaka, H.; Ohm, S.; Ostrowski, M.; Oya, I.; Padovani, M.; Panter, M.; Parsons, R. D.; Perennes, C.; Petrucci, P. -O; Peyaud, B.; Piel, Q.; Pita, S.; Poireau, V.; Noel, A. Priyana; Prokhorov, D. A.; Prokoph, H.; Puehlhofer, G.; Punch, Michael; Quirrenbach, A.; Raab, S.; Rauth, R.; Reimer, A.; Reimer, O.; Renaud, M.; Rieger, F.; Rinchiuso, L.; Romoli, C.; Rowell, G.; Rudak, B.; Ruiz-Velasco, E.; Sahakian, V.; Saito, S.; Sanchez, D. A.; Santangelo, A.; Sasaki, M.; Schlickeiser, R.; Schussler, F.; Schulz, A.; Schwanke, U.; Schwemmer, S.; Seglar-Arroyo, M.; Senniappan, Mohanraj; Seyffert, A. S.; Shafi, N.; Shilon, I.; Shiningayamwe, K.; Simoni, R.; Sinha, A.; Sol, H.; Spanier, F.; Specovius, A.; Spir-Jacob, M.; Stawarz, L.; Steenkamp, R.; Stegmann, C.; Steppa, C.; Takahashi, T.; Tavernet, J. -P; Tavernier, T.; Taylor, A. M.; Terrier, R.; Tibaldo, L.; Tiziani, D.; Tluczykont, M.; Trichard, C.; Tsirou, M.; Tsuji, N.; Tuffs, R.; Uchiyama, Y.; van der Walt, D. J.; van Eldik, C.; van Rensburg, C.; van Soelen, B.; Vasileiadis, G.; Veh, J.; Venter, C.; Viana, A.; Vincent, P.; Vink, J.; Voisin, F.; Voelk, H. J.; Vuillaume, T.; Wadiasingh, Z.; Wagner, S. J.; Wagner, R. M.; White, R.; Wierzcholska, A.; Yang, R.; Zaborov, D.; Zacharias, M.; Zanin, R.; Zdziarski, A.; Zech, A.; Zefi, F.; Ziegler, A.; Zorn, J.; Zywucka, N.; Cirelli, M.; Panci, P.; Sala, F.; Silk, J.; Taoso, M.

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Searches for gamma-ray lines and 'pure WIMP' spectra from Dark Matter annihilations in dwarf galaxies with HESS

Abdalla, H.

North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa..

Aharonian, F.

Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.;Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin 2, Ireland.;Natl Acad Sci Republ Armenia, Marshall Baghramian Ave 24, Yerevan, Armenia..

Benkhali, F. Ait

Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany..

Anguner, E. O.

Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France..

Arakawa, M.

Arcaro, C.

Armand, C.

Arrieta, M.

Backes, M.

Barnard, M.

Becherini, Yvonne

Tjus, J. Becker

Berge, D.

Bernhard, S.

Bernloehr, K.

Blackwell, R.

Bottcher, M.

Boisson, C.

Bolmont, J.

Bonnefoy, S.

Bordas, P.

Bregeon, J.

Brun, F.

Brun, P.

Bryan, M.

Buechele, M.

Bulik, T.

Bylund, Tomas

Capasso, M.

Caroff, S.

Carosi, A.

Casanova, S.

Cerruti, M.

Chakraborty, N.

Chandra, S.

Chaves, R. C. G.

Chen, A.

Colafrancesco, S.

Condon, B.

Davids, I. D.

Deil, C.

Devin, J.

deWilt, P.

Dirson, L.

Djannati-Atai, A.

Dmytriiev, A.

Donath, A.

Doroshenko, V.

Drury, L. O 'C.

Dyks, J.

Egberts, K.

Emery, G.

Ernenwein, J. -P

Eschbach, S.

Fegan, S.

Fiasson, A.

Fontaine, G.

Funk, S.

Fuessling, M.

Gabici, S.

Gallant, Y. A.

Gate, F.

Giavitto, G.

Glawion, D.

Glicenstein, J. F.

Gottschall, D.

Grondin, M. -H

Hahn, J.

Haupt, M.

Heinzelmann, G.

Henri, G.

Hermann, G.

Hinton, J. A.

Hofmann, W.

Hoischen, C.

Holch, T. L.

Holler, M.

Horns, D.

Huber, D.

Iwasaki, H.

Jacholkowska, A.

Jamrozy, M.

Jankowsky, D.

Jankowsky, F.

Jouvin, L.

Jung-Richardt, I.

Kastendieck, M. A.

Katarzynski, K.

Katsuragawa, M.

Katz, U.

Kerszberg, D.

Khangulyan, D.

Khelifi, B.

King, J.

Klepser, S.

Kluzniak, W.

Komin, Nu.

Kosack, K.

Krakau, S.

Kraus, M.

Kruger, P. P.

Lamanna, G.

Lau, J.

Lefaucheur, J.

Lemiere, A.

Lemoine-Goumard, M.

Lenain, J. -P

Leser, E.

Lohse, T.

Lorentz, M.

Lopez-Coto, R.

Lypova, I.

Malyshev, D.

Marandon, V.

Marcowith, A.

Mariaud, C.

Marti-Devesa, G.

Marx, R.

Maurin, G.

Meintjes, P. J.

Mitchell, A. M. W.

Moderski, R.

Mohamed, M.

Mohrmann, L.

Moulin, E.

Murach, T.

Nakashima, S.

de Naurois, M.

Ndiyavala, H.

Niederwanger, F.

Niemiec, J.

Oakes, L.

O'Brien, P.

Odaka, H.

Ohm, S.

Ostrowski, M.

Oya, I.

Padovani, M.

Panter, M.

Parsons, R. D.

Perennes, C.

Petrucci, P. -O

Peyaud, B.

Piel, Q.

Pita, S.

Poireau, V.

Noel, A. Priyana

Prokhorov, D. A.

Prokoph, H.

Puehlhofer, G.

Punch, Michael

Quirrenbach, A.

Raab, S.

Rauth, R.

Reimer, A.

Reimer, O.

Renaud, M.

Rieger, F.

Rinchiuso, L.

Romoli, C.

Rowell, G.

Rudak, B.

Ruiz-Velasco, E.

Sahakian, V.

Saito, S.

Sanchez, D. A.

Santangelo, A.

Sasaki, M.

Schlickeiser, R.

Schussler, F.

Schulz, A.

Schwanke, U.

Schwemmer, S.

Seglar-Arroyo, M.

Senniappan, Mohanraj

Seyffert, A. S.

Shafi, N.

Shilon, I.

Shiningayamwe, K.

Simoni, R.

Sinha, A.

Sol, H.

Spanier, F.

Specovius, A.

Spir-Jacob, M.

Stawarz, L.

Steenkamp, R.

Stegmann, C.

Steppa, C.

Takahashi, T.

Tavernet, J. -P

Tavernier, T.

Taylor, A. M.

Terrier, R.

Tibaldo, L.

Tiziani, D.

Tluczykont, M.

Trichard, C.

Tsirou, M.

Tsuji, N.

Tuffs, R.

Uchiyama, Y.

van der Walt, D. J.

van Eldik, C.

van Rensburg, C.

van Soelen, B.

Vasileiadis, G.

Veh, J.

Venter, C.

Viana, A.

Vincent, P.

Vink, J.

Voisin, F.

Voelk, H. J.

Vuillaume, T.

Wadiasingh, Z.

Wagner, S. J.

Wagner, R. M.

White, R.

Wierzcholska, A.

Yang, R.

Zaborov, D.

Zacharias, M.

Zanin, R.

Zdziarski, A.

Zech, A.

Zefi, F.

Ziegler, A.

Zorn, J.

Zywucka, N.

Cirelli, M.

Panci, P.

Sala, F.

Silk, J.

Taoso, M.

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2018 (English)In: Journal of Cosmology and Astroparticle Physics, E-ISSN 1475-7516, no 11, article id 037Article in journal (Refereed) Published

Abstract [en]

Dwarf spheroidal galaxies are among the most promising targets for detecting signals of Dark Matter (DM) annihilations. The H.E.S.S. experiment has observed five of these systems for a total of about 130 hours. The data are re-analyzed here, and, in the absence of any detected signals, are interpreted in terms of limits on the DM annihilation cross section. Two scenarios are considered: i) DM annihilation into mono-energetic gamma-rays and ii) DM in the form of pure WIMP multiplets that, annihilating into all electroweak bosons, produce a distinctive gamma-ray spectral shape with a high-energy peak at the DM mass and a lower-energy continuum. For case i), upper limits at 95% confidence level of about <sigma upsilon > less than or similar to 3 x 10(-25) cm(3) s(-1) are obtained in the mass range of 400 GeV to 1TeV. For case ii), the full spectral shape of the models is used and several excluded regions are identified, but the thermal masses of the candidates are not robustly ruled out.

Place, publisher, year, edition, pages

Institute of Physics Publishing (IOPP), 2018. no 11, article id 037

Keywords [en]

dark matter detectors, dark matter experiments, dwarfs galaxies, gamma ray detectors

National Category

Astronomy, Astrophysics and Cosmology

Research subject

Physics, Astroparticle Physics

Identifiers

URN: urn:nbn:se:lnu:diva-79098DOI: 10.1088/1475-7516/2018/11/037ISI: 000451080800001Scopus ID: 2-s2.0-85057627480OAI: oai:DiVA.org:lnu-79098DiVA, id: diva2:1268884

Available from: 2018-12-07 Created: 2018-12-07 Last updated: 2023-03-28Bibliographically approved

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Becherini, Yvonne Bylund, Tomas Punch, Michael Senniappan, Mohanraj

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