Deeper HESS observations of Vela Junior (RX J0852.0-4622) : Morphology studies and resolved spectroscopy

Abdalla, H.; Abramowski, A.; Aharonian, F.; Benkhali, F. Ait; Akhperjanian, A. G.; Angüner, E. O.; Arakawa, M.; Arrieta, M.; Aubert, P.; Backes, M.; Balzer, A.; Barnard, M.; Becherini, Yvonne; Tjus, J. Becker; Berge, D.; Bernhard, S.; Bernloehr, K.; Blackwell, R.; Boettcher, M.; Boisson, C.; Bolmont, J.; Bordas, P.; Bregeon, J.; Brun, F.; Brun, P.; Bryan, M.; Bilchele, M.; Bulik, T.; Capasso, M.; Carr, J.; Casanova, S.; Cerruti, M.; Chakraborty, N.; Chalme-Calvet, R.; Chaves, R. C. G.; Chen, A.; Chevalier, J.; Chretien, M.; Coffaro, M.; Colafrancesco, S.; Cologna, G.; Condon, B.; Conrad, J.; Cui, Y.; Davids, I. D.; Decock, J.; Degrange, B.; Deil, C.; Devin, J.; deWilt, P.; Dirson, L.; Djannati-Atai, A.; Domainko, W.; Donath, A.; Drury, L. O 'C.; Dutson, K.; Dyks, J.; Edwards, T.; Egberts, K.; Eger, P.; Ernenwein, J. -P; Eschbach, S.; Farnier, Christian; Fegan, S.; Fernandes, M. V.; Fiasson, A.; Fontaine, G.; Foerster, A.; Funk, S.; Fuessling, M.; Gabici, S.; Gajdus, M.; Gallant, Y. A.; Garrigoux, T.; Giavitto, G.; Giebels, B.; Glicenstein, J. F.; Gottschall, D.; Goya, A.; Grondin, M. -H; Hahn, J.; Haupt, M.; Hawkes, J.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hervet, O.; Hinton, J. A.; Hofmann, W.; Hoischen, C.; Holler, M.; Horns, D.; Ivascenko, A.; Iwasaki, H.; Jacholkowska, A.; Jamrozy, M.; Janiak, M.; Jankowsky, D.; Jankowsky, F.; Jingo, M.; Jogler, T.; Jouvin, L.; Jung-Richardt, I.; Kastendieck, M. A.; Katarzynski, K.; Katsuragawa, M.; Katz, U.; Kerszberg, D.; Khangulyan, D.; Khelifi, B.; Kieffer, M.; King, J.; Klepser, S.; Klochkov, D.; Kluzniak, W.; Kolitzus, D.; Komin, Nu.; Kosack, K.; Krakau, S.; Kraus, M.; Krueger, P. P.; Laffon, H.; Lamanna, G.; Lau, J.; Lees, J. -P; Lefaucheur, J.; Lefranc, V.; Lemiere, A.; Lemoine-Goumard, M.; Lenain, J. -P; Leser, E.; Lohse, T.; Lorentz, M.; Liu, R.; Lopez-Coto, R.; Lypova, I.; Marandon, V.; Marcowith, A.; Mariaud, C.; Marx, R.; Maurin, G.; Maxted, N.; Mayer, M.; Meintjes, P. J.; Meyer, M.; Mitche, A. M. W.; Moderski, R.; Mohamed, M.; Mohrmann, L.; Mora, K.; Moulin, E.; Murach, T.; Nakashima, S.; de Naurois, M.; Niederwanger, F.; Niemiec, J.; Oakes, L.; O'Brien, P.; Odaka, H.; Oettl, S.; Ohm, S.; Ostrowski, M.; Oya, I.; Padovani, M.; Panter, M.; Parsons, R. D.; Arribas, M. Paz; Pekeur, N. W.; Pelletier, G.; Perennes, C.; Petrucci, P. -O; Peyaud, B.; Piel, Q.; Pita, S.; Poon, H.; Prokhorov, Dmitry; Prokoph, Heike; Puehlhofer, G.; Punch, Michael; Quirrenbach, A.; Raab, S.; Reimer, A.; Reimer, O.; Renaud, M.; de los Reyes, R.; Richter, S.; Rieger, F.; Romoli, C.; Rowell, G.; Rudak, B.; Rulten, C. B.; Sahakian, V.; Saito, S.; Salek, D.; Sanchez, D. A.; Santangelo, A.; Sasaki, M.; Schlickeiser, R.; Schuessler, F.; Schulz, A.; Schwanke, U.; Schwemmer, S.; Seglar-Arroyo, M.; Settimo, M.; Seyffert, A. S.; Shafi, N.; Shilon, I.; Simoni, R.; Sol, H.; Spanier, F.; Spengler, G.; Spies, F.; Stawarz, L.; Steenkamp, R.; Stegmann, C.; Stycz, K.; Sushch, I.; Takahashi, T.; Tavernet, J. -P; Tavernier, T.; Taylor, A. M.; Terrier, R.; Tibaldo, L.; Tiziani, D.; Tluczykont, M.; Trichard, C.; 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, P.; Wagner, R. M.; White, R.; Wierzcholska, A.; Willmann, P.; Woernlein, A.; Wouters, D.; Yang, R.; Zabalza, V.; Zaborov, D.; Zacharias, M.; Zanin, R.; Zdziarski, A. A.; Zech, A.; Zefi, F.; Ziegler, A.; Zywucka, N.

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Deeper HESS observations of Vela Junior (RX J0852.0-4622): Morphology studies and resolved spectroscopy

Abdalla, H.

North-West University, South Africa.

Abramowski, A.

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.

Akhperjanian, A. G.

Angüner, E. O.

Arakawa, M.

Arrieta, M.

Aubert, P.

Backes, M.

Balzer, A.

Barnard, M.

Becherini, Yvonne

Tjus, J. Becker

Berge, D.

Bernhard, S.

Bernloehr, K.

Blackwell, R.

Boettcher, M.

Boisson, C.

Bolmont, J.

Bordas, P.

Bregeon, J.

Brun, F.

Brun, P.

Bryan, M.

Bilchele, M.

Bulik, T.

Capasso, M.

Carr, J.

Casanova, S.

Cerruti, M.

Chakraborty, N.

Chalme-Calvet, R.

Chaves, R. C. G.

Chen, A.

Chevalier, J.

Chretien, M.

Coffaro, M.

Colafrancesco, S.

Cologna, G.

Condon, B.

Conrad, J.

Cui, Y.

Davids, I. D.

Decock, J.

Degrange, B.

Deil, C.

Devin, J.

deWilt, P.

Dirson, L.

Djannati-Atai, A.

Domainko, W.

Donath, A.

Drury, L. O 'C.

Dutson, K.

Dyks, J.

Edwards, T.

Egberts, K.

Eger, P.

Ernenwein, J. -P

Eschbach, S.

Farnier, Christian

Fegan, S.

Fernandes, M. V.

Fiasson, A.

Fontaine, G.

Foerster, A.

Funk, S.

Fuessling, M.

Gabici, S.

Gajdus, M.

Gallant, Y. A.

Garrigoux, T.

Giavitto, G.

Giebels, B.

Glicenstein, J. F.

Gottschall, D.

Goya, A.

Grondin, M. -H

Hahn, J.

Haupt, M.

Hawkes, J.

Heinzelmann, G.

Henri, G.

Hermann, G.

Hervet, O.

Hinton, J. A.

Hofmann, W.

Hoischen, C.

Holler, M.

Horns, D.

Ivascenko, A.

Iwasaki, H.

Jacholkowska, A.

Jamrozy, M.

Janiak, M.

Jankowsky, D.

Jankowsky, F.

Jingo, M.

Jogler, T.

Jouvin, L.

Jung-Richardt, I.

Kastendieck, M. A.

Katarzynski, K.

Katsuragawa, M.

Katz, U.

Kerszberg, D.

Khangulyan, D.

Khelifi, B.

Kieffer, M.

King, J.

Klepser, S.

Klochkov, D.

Kluzniak, W.

Kolitzus, D.

Komin, Nu.

Kosack, K.

Krakau, S.

Kraus, M.

Krueger, P. P.

Laffon, H.

Lamanna, G.

Lau, J.

Lees, J. -P

Lefaucheur, J.

Lefranc, V.

Lemiere, A.

Lemoine-Goumard, M.

Lenain, J. -P

Leser, E.

Lohse, T.

Lorentz, M.

Liu, R.

Lopez-Coto, R.

Lypova, I.

Marandon, V.

Marcowith, A.

Mariaud, C.

Marx, R.

Maurin, G.

Maxted, N.

Mayer, M.

Meintjes, P. J.

Meyer, M.

Mitche, A. M. W.

Moderski, R.

Mohamed, M.

Mohrmann, L.

Mora, K.

Moulin, E.

Murach, T.

Nakashima, S.

de Naurois, M.

Niederwanger, F.

Niemiec, J.

Oakes, L.

O'Brien, P.

Odaka, H.

Oettl, S.

Ohm, S.

Ostrowski, M.

Oya, I.

Padovani, M.

Panter, M.

Parsons, R. D.

Arribas, M. Paz

Pekeur, N. W.

Pelletier, G.

Perennes, C.

Petrucci, P. -O

Peyaud, B.

Piel, Q.

Pita, S.

Poon, H.

Prokhorov, Dmitry

Prokoph, Heike

Puehlhofer, G.

Punch, Michael

Quirrenbach, A.

Raab, S.

Reimer, A.

Reimer, O.

Renaud, M.

de los Reyes, R.

Richter, S.

Rieger, F.

Romoli, C.

Rowell, G.

Rudak, B.

Rulten, C. B.

Sahakian, V.

Saito, S.

Salek, D.

Sanchez, D. A.

Santangelo, A.

Sasaki, M.

Schlickeiser, R.

Schuessler, F.

Schulz, A.

Schwanke, U.

Schwemmer, S.

Seglar-Arroyo, M.

Settimo, M.

Seyffert, A. S.

Shafi, N.

Shilon, I.

Simoni, R.

Sol, H.

Spanier, F.

Spengler, G.

Spies, F.

Stawarz, L.

Steenkamp, R.

Stegmann, C.

Stycz, K.

Sushch, I.

Takahashi, T.

Tavernet, J. -P

Tavernier, T.

Taylor, A. M.

Terrier, R.

Tibaldo, L.

Tiziani, D.

Tluczykont, M.

Trichard, C.

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, P.

Wagner, R. M.

White, R.

Wierzcholska, A.

Willmann, P.

Woernlein, A.

Wouters, D.

Yang, R.

Zabalza, V.

Zaborov, D.

Zacharias, M.

Zanin, R.

Zdziarski, A. A.

Zech, A.

Zefi, F.

Ziegler, A.

Zywucka, N.

Show others and affiliations

2018 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 612, article id A7Article in journal (Refereed) Published

Abstract [en]

Aims. We study gamma-ray emission from the shell-type supernova remnant (SNR) RXJ0852.0-4622 to better characterize its spectral properties and its distribution over the SNR. Methods. The analysis of an extended High Energy Spectroscopic System (H.E.S.S.) data set at very high energies (E > 100 GeV) permits detailed studies, as well as spatially resolved spectroscopy, of the morphology and spectrum of the whole RXJ0852.0-4622 region. The H.E.S.S. data are combined with archival data from other wavebands and interpreted in the framework of leptonic and hadronic models. The joint Fermi-LAT-H.E.S.S. spectrum allows the direct determination of the spectral characteristics of the parent particle population in leptonic and hadronic scenarios using only GeV-TeV data. Results. An updated analysis of the H.E.S.S. data shows that the spectrum of the entire SNR connects smoothly to the high-energy spectrum measured by Fermi-LAT. The increased data set makes it possible to demonstrate that the H.E.S.S. spectrum deviates significantly from a power law and is well described by both a curved power law and a power law with an exponential cutoff at an energy of E-cut = (6.7 +/- 1.2(stat) +/- 1.2(syst)) TeV. The joint Fermi-LAT-H.E.S.S. spectrum allows the unambiguous identification of the spectral shape as a power law with an exponential cutoff. No significant evidence is found for a variation of the spectral parameters across the SNR, suggesting similar conditions of particle acceleration across the remnant. A simple modeling using one particle population to model the SNR emission demonstrates that both leptonic and hadronic emission scenarios remain plausible. It is also shown that at least a part of the shell emission is likely due to the presence of a pulsar wind nebula around PSR J0855-4644.

Place, publisher, year, edition, pages

EDP Sciences, 2018. Vol. 612, article id A7

Keywords [en]

astroparticle physics, gamma rays: general, acceleration of particles, cosmic rays, ISM: supernova remnants

National Category

Astronomy, Astrophysics and Cosmology

Research subject

Physics, Astroparticle Physics

Identifiers

URN: urn:nbn:se:lnu:diva-76465DOI: 10.1051/0004-6361/201630002ISI: 000429404700007Scopus ID: 2-s2.0-85045509704OAI: oai:DiVA.org:lnu-76465DiVA, id: diva2:1232125

Available from: 2018-07-10 Created: 2018-07-10 Last updated: 2019-08-29Bibliographically approved

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Becherini, Yvonne Farnier, Christian Prokhorov, Dmitry Prokoph, Heike Punch, Michael

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