Fermi-LAT and Swift detection of a large GeV and optical flare from J123939+044409
Abstract
The Large Area Telescope (LAT), one of the two instruments on the Fermi Gamma-ray Space Telescope (formerly GLAST, launched on June 11, 2008), has observed a large flare from the GeV source J123939+044409 at: RA = 189.9 and Dec = 4.7 (error circle at 95% = 0.1 deg). This position is coincident with the EGRET source 3EG J1236+0457, and a has probability of 98.3% to be associated with the CRATES source J1239+0443.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- January 2009
- Bibcode:
- 2009ATel.1888....1T
- Keywords:
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- Optical;
- X-ray;
- Gamma Ray;
- >GeV;
- AGN;
- Quasars