Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010sf2a.conf..161e&link_type=abstract
SF2A-2010: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: S. Boissier, M. Heydari-
Astronomy and Astrophysics
Astrophysics
Galaxies: Active, Quasars: Individual: 3C~454.3, Gamma Rays: Observations
Scientific paper
The flat-spectrum-radio-quasar 3C~454.3 underwent an extraordinary outburst in December 2009 when it became the brightest gamma-ray source in the sky for over one week. Its daily flux measured with the Fermi Large Area Telescope at photon energies E>100 MeV reached FE>100 MeV = 22± 1 × 10-6 ph cm-2 s-1, representing the highest daily flux of any blazar ever recorded in high-energy γ rays. It again became the brightest source in the sky in April 2010, triggering a pointed-mode observation by Fermi. The γ-ray temporal and spectral properties during these exceptional events are presented and discussed.
Dermer Carles D.
Escande L.
Lott Benoit
Tanaka Yasuhiro
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