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<i>Fermi Gamma-ray Space Telescope</i> observations of the gamma-ray outburst from 3C454.3 in November 2010 [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy, 2011.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description:
Article numbers L26 : digital, PDF file
Additional Creators:
SLAC National Accelerator Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
Here, 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 gsim 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.
Report Numbers:
E 1.99:1357234
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Published through SciTech Connect.
05/06/2011.
Astrophysical Journal Letters 733 2 ISSN 2041-8205 AM
Abdo, A.; Ackermann, M.; Ajello, M.; Allafort, A.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bellazzini, R.; Berenji, B.; Blandford, R.; Bloom, E.; Bonamente, E.; Borgland, A.; Bouvier, A.; Bregeon, J.; Brigida, M.; Bruel, P.; Buehler, R.; Buson, S.; Caliandro, G.; Cameron, R.; Caraveo, P.; Casandjian, J.; Cavazzuti, E.; et al.
Funding Information:
AC02-76SF00515
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