Fermi LAT detection of a GeV flare from GB6 B1310+4844

Details Fermi LAT detection of a GeV flare from GB6 B1310+4844 Fermi LAT detection of a GeV flare from GB6 B1310+4844

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2306....1s&link_type=abstract

The Astronomer's Telegram, #2306

Astronomy and Astrophysics

Astronomy

3

Gamma Ray, >Gev, Transients

Scientific paper

The Large Area Telescope (LAT), one of the two instruments on the Fermi Gamma-ray Space Telescope, has observed an increasing gamma-ray flux from a source positionally consistent with the flat spectrum radio quasar GB6 B1310+4844 (VLBI position: R.A. = 13:12:43.354, Dec. = +48:28:30.94, J2000, Beasley et al. 2002, ApJS, 141, 13). Preliminary analysis indicates that the source on November 18, 2009 was in a high state with a gamma-ray flux (photon energy E>100MeV) of (1.0 ±0.2) x 10-6 photons cm-2 s-1 (errors are statistical only), which represents an increase of a factor of about 40 with respect to the average source flux level during the first 11 months of the Fermi mission.

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