Observations of the young supernova remnant RX J1713.7-3946 with the Fermi Large Area Telescope

A. A. Abdo Markus Ackermann Marco Ajello A. Allafort Luca Baldini J. Ballet 1 Guido 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. Brandt 2 J. Bregeon M. Brigida P. Bruel 3 R. Buehler S. Buson G. A. Caliandro R. A. Cameron P. A. Caraveo J. M. Casandjian 1 C. Cecchi S. Chaty 1 A. Chekhtman C. C. Cheung J. Chiang A. N. Cillis S. Ciprini R. Claus J. Cohen-Tanugi 4 J. Conrad S. Corbel 5 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. Dumora 6 C. Favuzzi E. C. Ferrara P. Fortin 3 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. Horan 3 M. S. Jackson G. Jóhannesson A. S. Johnson T. Kamae H. Katagiri J. Kataoka M. Kerr J. Knödlseder 2 M. Kuss J. Lande L. Latronico S.-H. Lee M. Lemoine-Goumard 6 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. Nuss 4 T. Ohsugi A. Okumura E. Orlando J. F. Ormes D. Paneque D. Parent V. Pelassa 4 M. Pesce-Rollins M. Pierbattista 1 F. Piron 4 M. Pohl T.A. Porter S. Rainò R. Rando M. Razzano O. Reimer T. Reposeur 6 S. Ritz R. W. Romani M. Roth H. F.-W. Sadrozinski P. M. Saz Parkinson C. Sgrò David Stanley Smith 6 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. Tibaldo 1 O. Tibolla D. F. Torres G. Tosti A. Tramacere E. Troja Y. Uchiyama J. Vandenbroucke V. Vasileiou 4 G. Vianello N. Vilchez 2 V. Vitale A. P. Waite P. Wang B. L. Winer K. S. Wood H. Yamamoto R. Yamazaki Z. Yang M. Ziegler
Abstract : 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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Submitted on : Wednesday, July 13, 2011 - 10:10:17 PM
Last modification on : Wednesday, July 27, 2016 - 2:48:48 PM

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A. A. Abdo, Markus Ackermann, Marco Ajello, A. Allafort, Luca Baldini, et al.. Observations of the young supernova remnant RX J1713.7-3946 with the Fermi Large Area Telescope. Astrophysical Journal, American Astronomical Society, 2011, 734, pp.28. <10.1088/0004-637X/734/1/28>. <in2p3-00608700>

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