A. ABDO, A.; ACKERMANN, Markus; AJELLO, Marco; ALLAFORT, A.; BALDINI, Luca; BALLET, Jean; BARBIELLINI, Guido; BASTIERI, D.; BELLAZZINI, R.; BERENJI, B.; D. BLANDFORD, R.; D. BLOOM, E.; BONAMENTE, E.; W. BORGLAND, A.; BOUVIER, A.; BREGEON, J.; BRIGIDA, M.; BRUEL, Pascal; BUEHLER, R.; BUSON, S.; A. CALIANDRO, G.; A. CAMERON, R.; CARAVEO, P. A.; M. CASANDJIAN, J.; CAVAZZUTI, E.; CECCHI, C.; CHARLES, E.; CHEKHTMAN, A.; C. CHEUNG, C.; CHIANG, J.; CIPRINI, S.; CLAUS, R.; CONRAD, J.; CUTINI, S.; D'AMMANDO, F.; DE ANGELIS, A.; DE PALMA, F.; D. DERMER, C.; W. DIGEL, S.; DO COUTO E SILVA, E.; S. DRELL, P.; DUBOIS, R.; DUMORA, D.; ESCANDE, L.; FAVUZZI, C.; J. FEGAN, S.; C. FERRARA, E.; FORTIN, P.; FUKAZAWA, Y.; FUSCO, P.; GARGANO, F.; GASPARRINI, D.; GEHRELS, N.; GERMANI, S.; GIGLIETTO, N.; GIOMMI, P.; GIORDANO, F.; GIROLETTI, M.; GLANZMAN, T.; GODFREY, G.; A. GRENIER, I.; E. GROVE, J.; GUIRIEC, S.; HADASCH, D.; HAYASHIDA, M.; HAYS, E.; HORAN, D.; ITOH, R.; J'OHANNESSON, G.; S. JOHNSON, A.; KAMAE, T.; KATAGIRI, H.; KATAOKA, J.; KNÖDLSEDER, Jürgen; KUSS, M.; LANDE, J.; LARSSON, S.; LATRONICO, L.; LEE, S.-H.; LONGO, F.; LOPARCO, F.; LOTT, B.; N. LOVELLETTE, M.; LUBRANO, P.; M. MADEJSKI, G.; MAKEEV, A.; N. MAZZIOTTA, M.; MCCONVILLE, W.; E. MCENERY, J.; F. MICHELSON, P.; MITTHUMSIRI, W.; MIZUNO, T.; A. MOISEEV, A.; MONTE, C.; E. MONZANI, M.; MORSELLI, A.; V. MOSKALENKO, I.; MURGIA, S.; NAUMANN-GODO, M.; NISHINO, S.; L. NOLAN, P.; P. NORRIS, J.; NUSS, E.; OHSUGI, T.; OKUMURA, A.; ORLANDO, E.; F. ORMES, J.; PANEQUE, D.; PELASSA, V.; PESCE-ROLLINS, M.; PIERBATTISTA, M.; PIRON, F.; PORTER, T.A.; RAIN'O, S.; RANDO, R.; RAZZAQUE, S.; REIMER, A.; REIMER, O.; RITZ, S.; ROTH, M.; F.-W. SADROZINSKI, H.; SANCHEZ, D.; D. SCARGLE, J.; L. SCHALK, T.; SGR'O, C.; J. SISKIND, E.; D. SMITH, P.; SPANDRE, G.; SPINELLI, P.; S. STRICKMAN, M.; TAKAHASHI, H.; TAKAHASHI, T.; TANAKA, T.; TANAKA, Y.; G. THAYER, J.; B. THAYER, J.; J. THOMPSON, D.; TIBALDO, L.; F. TORRES, D.; TOSTI, G.; TRAMACERE, A.; TROJA, E.; VANDENBROUCKE, J.; VASILEIOU, V.; VIANELLO, G.; VILCHEZ, N.; VITALE, V.; P. WAITE, A.; WANG, P.; L. WINER, B.; S. WOOD, K.; YANG, Z.; ZIEGLER, M.

doi:10.1088/2041-8205/733/2/L26

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The Astrophysical journal letters. 2011-06-01, vol. 733, p. L26

Bristol : IOP Publishing

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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.< Réduire

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galaxies: active

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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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