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| Title: |
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Fermi Gamma-ray Space Telescope Observations of the Gamma-ray Outburst from 3C454.3 in November 2010 |
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| Author: |
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A. A. Abdo, M. Ackermann, M. Ajello, A. Allafort, L. Baldini, J. Ballet1, G. Barbiellini, D. Bastieri, R. Bellazzini, B. Berenji, R. D. Blandford, E. D. Bloom, E. Bonamente, A. W. Borgland, A. Bouvier, J. Bregeon, M. Brigida, P. Bruel2, R. Buehler, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, J. M. Casandjian1, E. Cavazzuti, C. Cecchi, E. Charles, A. Chekhtman, C. C. Cheung, J. Chiang, S. Ciprini, R. Claus, J. Conrad, S. Cutini, F. D'ammando, A. De Angelis, F. De Palma, C. D. Dermer, S. W. Digel, E. Do Couto E Silva, P. S. Drell, R. Dubois, D. Dumora3, L. Escande3, C. Favuzzi, S. J. Fegan2, E. C. Ferrara, P. Fortin2, Y. Fukazawa, P. Fusco, F. Gargano, D. Gasparrini, N. Gehrels, S. Germani, N. Giglietto, P. Giommi, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, I. A. Grenier1, J. E. Grove, S. Guiriec, D. Hadasch, M. Hayashida, E. Hays, D. Horan2, R. Itoh, G. J'ohannesson, A. S. Johnson, T. Kamae, H. Katagiri, J. Kataoka, J. Kn¨odlseder4, M. Kuss, J. Lande, S. Larsson, L. Latronico, S.-H. Lee, F. Longo, F. Loparco, B. Lott3, M. N. Lovellette, P. Lubrano, G. M. Madejski, A. Makeev, M. N. Mazziotta, W. Mcconville, J. E. Mcenery, P. F. Michelson, W. Mitthumsiri, T. Mizuno, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, M. Naumann-Godo1, S. Nishino, P. L. Nolan, J. P. Norris, E. Nuss5, T. Ohsugi, A. Okumura, E. Orlando, J. F. Ormes, D. Paneque, V. Pelassa, M. Pesce-Rollins, M. Pierbattista1, F. Piron5, T. A. Porter, S. Rain'o, R. Rando, S. Razzaque, A. Reimer, O. Reimer, S. Ritz, M. Roth, H. F.-W. Sadrozinski, D. Sanchez2, J. D. Scargle, T. L. Schalk, C. Sgr'o, E. J. Siskind, P. D. Smith, G. Spandre, P. Spinelli, M. S. Strickman, H. Takahashi, T. Takahashi, T. Tanaka, Y. Tanaka, J. G. Thayer, J. B. Thayer, D. J. Thompson, L. Tibaldo, D. F. Torres, G. Tosti, A. Tramacere, E. Troja, J. Vandenbroucke, V. Vasileiou5, G. Vianello, N. Vilchez6, V. Vitale, A. P. Waite, P. Wang, B. L. Winer, K. S. Wood, Z. Yang, M. Ziegler |
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GLAST |
| Abstract: |
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The flat-spectrum radio quasar 3C454.3 underwent an extraordinary 5 day γ -ray outburst in 2010 November when the daily flux measured with the Fermi Large Area Telescope (LAT) at photon energies E > 100 MeV reached (66 ± 2) × 10−6 photons cm−2 s−1. This is a factor of three higher than its previous maximum flux recorded in 2009 December and 5 times brighter than the Vela pulsar, which is normally the brightest source in the γ -ray sky. The 3 hr peak flux was (85 ± 5)×10−6 photons cm−2 s−1, corresponding to an apparent isotropic luminosity of (2.1 ± 0.2)×1050 erg s−1, the highest ever recorded for a blazar. In this Letter, we investigate the features of this exceptional event in the γ -ray band of the Fermi-LAT. In contrast to previous flares of the same source observed with the Fermi-LAT, clear spectral changes are observed during the flare. |
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| Document of the type: |
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Article in peer-reviewed journal |
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Publication or writing
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2011-06-01 |
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| Journal: |
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The Astrophysical Journal Letters |
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| Volume: |
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733 |
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| Page/Article: |
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L26 |
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| Keyword(s): |
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galaxies: active |
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