Fermi-LAT detection of increased gamma-ray activity from the blazar PKS 0727-115

Details Fermi-LAT detection of increased gamma-ray activity from the blazar PKS 0727-115 Fermi-LAT detection of increased gamma-ray activity from the blazar PKS 0727-115

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.1919....1h&link_type=abstract

The Astronomer's Telegram, #1919

Astronomy and Astrophysics

Astronomy

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 (formerly GLAST, launched June 11, 2008), has observed an increasing gamma-ray flux from a source positionally consistent with PKS 0727-115 (RA: 07h30m19.1s, Dec: -11d41m13s, J2000, z=1.59 ( Zensus et al. 2002)). Preliminary analysis indicates that over the past month the source has become, on average, brighter with a gamma-ray flux (E>100MeV) of approximately 5.0+/- 0.8 x 10^-7 photons cm^-2 s^-1 on weekly timescales and occasional day-scale detections at the level of approximately 4.0 +/- 1.0 x 10^-7 photons cm^-2 s^-1.

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