Accès ouvert déclaré
2014
preprint
HESS J1640-465 - an exceptionally luminous TeV gamma-ray SNR
A. Abramowski, F. Aharonian, F. Ait Benkhali, A. G. Akhperjanian, E. O. Angüner, G. Anton, S. Balenderan, A. Balzer, A. Barnacka, Yvonne Becherini, Julia Becker Tjus, K. Bernlöhr, E. Birsin, E. Bissaldi, J. Biteau, M. Böttcher, Catherine Boisson, Julien Bolmont, Pol Bordas, J. Brucker, Francois Brun, P. Brun, T. Bulik, S. Carrigan, S. Casanova, Matteo Cerruti, P. M. Chadwick, R. Chalmé-Calvet, R. C. G. Chaves, A. Cheesebrough, M. Chrétien, S. Colafrancesco, G. Cologna, Janet M. Conrad, C. Couturier, Yangchi Cui, M. Dalton, Michael K. Daniel, I. D. Davids, B. Degrange, C. Deil, P. deWilt, H. J. Dickinson, Arache Djannati-Ataï, W. Domainko, Luke O'C. Drury, G. Dubus, K. Dutson, J. Dyks, M. Dyrda, T. Edwards, Kathrin Egberts, P. Eger, P. Espigat, C. Farnier, S. Fegan, F. Feinstein, Matheus Vasconcelos Fernandes, D. Fernández, Armand Fiasson, Gerard Fontaine, Aren A. Forster, M. Füßling, M. Gajdus, Y. A. Gallant, T. Garrigoux, G. Giavitto, Berrie Giebels, J. F. Glicenstein, M.-H. Grondin, M. Grudzińska, S. Häffner, Joachim Hahn, J. Harris, G. Heinzelmann, G. Henri, German HERMANN, O. Hervet, Andreas Hillert, J. A. Hinton, W. Hofmann, P. Hofverberg, M. Holler, Dieter Horns, A. Jacholkowska, C. Jahn, Marek Jamrozy, M. Janiak, F. Jankowsky, I. Jung, M. A. Kastendieck, Krzysztof Katarzynski, Uli F. Katz, S. Kaufmann, Bruno Khelifi, M. Kieffer, S. Klepser, D. Klochkov, W. Kluźniak
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Le résumé fourni par la source
The results of follow-up observations of the TeV gamma-ray source HESSJ 1640-465 from 2004 to 2011 with the High Energy Stereoscopic System (H.E.S.S.) are reported in this work. The spectrum is well described by an exponential cut-off power law with photon index Gamma=2.11 +/- 0.09_stat +/- 0.10_sys, and a cut-off energy of E_c = (6.0 +2.0 -1.2) TeV. The TeV emission is significantly extended and overlaps with the north-western part of the shell of the SNR G338.3-0.0. The new H.E.S.S. results, a re-analysis of archival XMM-Newton data, and multi-wavelength observations suggest that a significant part of the gamma-ray emission from HESS J1640-465 originates in the SNR shell. In a hadronic scenario, as suggested by the smooth connection of the GeV and TeV spectra, the product of total proton energy and mean target density could be as high as W_p n_H ~ 4 x 10^52 (d/10kpc)^2 erg cm^-3.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Astrophysics and Cosmic PhenomenaGamma-ray bursts and supernovaeAstrophysical Phenomena and Observations