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| Titre : |
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Observations of the young supernova remnant RX J1713.7-3946 with the Fermi Large Area Telescope |
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| Auteur : |
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A. A. Abdo, M. Ackermann, M. Ajello, A. Allafort, L. Baldini, J. Ballet1, G. Barbiellini, M. G. Baring, D. Bastieri, R. Bellazzini, B. Berenji, R. D. Blandford, E. D. Bloom, E. Bonamente, A. W. Borgland, A. Bouvier, T. J. Brandt2, J. Bregeon, M. Brigida, P. Bruel3, R. Buehler, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, J. M. Casandjian1, C. Cecchi, S. Chaty1, A. Chekhtman, C. C. Cheung, J. Chiang, A. N. Cillis, S. Ciprini, R. Claus, J. Cohen-Tanugi4, J. Conrad, S. Corbel5, S. Cutini, A. De Angelis, F. De Palma, C. D. Dermer, S. W. Digel, E. Do Couto E Silva, P. S. Drell, A. Drlica-Wagner, R. Dubois, D. Dumora6, C. Favuzzi, E. C. Ferrara, P. Fortin3, M. Frailis, Y. Fukazawa, Y. Fukui, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Gehrels, S. Germani, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, I. A. Grenier, M.-H. Grondin, S. Guiriec, D. Hadasch, Y. Hanabata, A. K. Harding, M. Hayashida, K. Hayashi, E. Hays, D. Horan3, M. S. Jackson, G. Jóhannesson, A. S. Johnson, T. Kamae, H. Katagiri, J. Kataoka, M. Kerr, J. Knödlseder2, M. Kuss, J. Lande, L. Latronico, S.-H. Lee, M. Lemoine-Goumard6, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, G. M. Madejski, A. Makeev, M. N. Mazziotta, J. E. Mcenery, P. F. Michelson, R. P. Mignani, W. Mitthumsiri, T. Mizuno, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, M. Naumann-Godo, P. L. Nolan, J. P. Norris, E. Nuss4, T. Ohsugi, A. Okumura, E. Orlando, J. F. Ormes, D. Paneque, D. Parent, V. Pelassa4, M. Pesce-Rollins, M. Pierbattista1, F. Piron4, M. Pohl, T. A. Porter, S. Rainò, R. Rando, M. Razzano, O. Reimer, T. Reposeur6, S. Ritz, R. W. Romani, M. Roth, H. F.-W. Sadrozinski, P. M. Saz Parkinson, C. Sgrò, D. A. Smith6, P. D. Smith, G. Spandre, P. Spinelli, M. S. Strickman, H. Tajima, H. Takahashi, T. Takahashi, T. Tanaka, J. G. Thayer, J. B. Thayer, D. J. Thompson, L. Tibaldo1, O. Tibolla, D. F. Torres, G. Tosti, A. Tramacere, E. Troja, Y. Uchiyama, J. Vandenbroucke, V. Vasileiou4, G. Vianello, N. Vilchez2, V. Vitale, A. P. Waite, P. Wang, B. L. Winer, K. S. Wood, H. Yamamoto, R. Yamazaki, Z. Yang, M. Ziegler |
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| Laboratoire : |
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| Résumé : |
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We present observations of the young Supernova remnant (SNR) RX J1713.7-3946 with the Fermi Large Area Telescope (LAT). We clearly detect a source positionally coincident with the SNR. The source is extended with a best-fit extension of 0.55$^{\circ} \pm 0.04^{\circ}$ matching the size of the non-thermal X-ray and TeV gamma-ray emission from the remnant. The positional coincidence and the matching extended emission allows us to identify the LAT source with the supernova remnant RX J1713.7-3946. The spectrum of the source can be described by a very hard power-law with a photon index of $\Gamma = 1.5 \pm 0.1$ that coincides in normalization with the steeper H.E.S.S.-detected gamma-ray spectrum at higher energies. The broadband gamma-ray emission is consistent with a leptonic origin as the dominant mechanism for the gamma-ray emission. |
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| Collaboration/Projet : |
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Fermi-LAT |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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10/06/2011 |
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| Nom du périodique : |
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| Astrophysical Journal (Astrophys. J.) |
| Publisher |
American Astronomical Society |
| ISSN |
0004-637X |
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| Volume : |
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734 |
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| Page/Article : |
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28 |
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| Classification PACS : |
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98.38.Mz Supernova remnants 95.30.Cq Elementary particle processes 95.85.Pw &ggr;-ray 98.70.Rz &ggr;-ray sources; &ggr;-ray bursts 95.30.Gv Radiation mechanisms; polarization |
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| Commentaire : |
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Contact authors: Markus Ackermann, Stefan Funk, Yasunobu Uchiyama |
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| Mot(s)-clé(s) : |
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acceleration of particles – gamma rays: general – gamma rays: ISM – ISM: individual objects (RX J1713.7-3946) – ISM: supernova remnants – radiation mechanisms: non-thermal |
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