Fermi LAT detection of an extraordinary GeV outburst from 3C 454.3

Details Fermi LAT detection of an extraordinary GeV outburst from 3C 454.3 Fermi LAT detection of an extraordinary GeV outburst from 3C 454.3

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2328....1e&link_type=abstract

The Astronomer's Telegram, #2328

Astronomy and Astrophysics

Astronomy

20

Gamma Ray, >Gev, Request For Observations, Agn, Quasars

Scientific paper

The Large Area Telescope (LAT) one of the two instruments on the Fermi Gamma-ray Space Telescope, has detected an extraordinary gamma-ray flare from the blazar 3C 454.3 (J2000, RA: 22:53:57.748, Dec: +16:08:53.56, Fey et al. 2004, AJ, 127, 3587). Preliminary analysis indicates that the source on December 2nd, 2009, has reached a very high state with an average gamma-ray flux over the day (E>100MeV) of 22 ± 1 (statistical only) x 10-6 ph cm-2 s-1 and peaking at 26 ± 3 (statistical only) x 10-6 ph cm-2 s-1 in the 6 hour period between 12 and 18 UT of December 2nd.

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