Fermi LAT detection of increased gamma-ray emission from PKS 0736+01
ATel #6731; F. D'Ammando (Univ. Bologna, INAF-IRA Bologna), M. Orienti (INAF-IRA Bologna) on behalf of the Fermi Large Area Telescope Collaboration
on 22 Nov 2014; 08:33 UT
Credential Certification: Filippo D'Ammando (filippo.dammando@fisica.unipg.it)
Subjects: Gamma Ray, >GeV, Request for Observations, AGN, Blazar, Quasar
The Large Area Telescope (LAT), on board the Fermi Gamma-ray Space Telescope, has observed gamma-ray flaring activity from a source positionally consistent with the flat spectrum radio quasar PKS 0736+01 (also known as 2FGL J0739.2+0138, Nolan et al. 2012, ApJS, 199, 31) with radio coordinates R.A.: 114.8251408 deg, Dec: 1.6179497 deg (J2000, Johnston et al. 1995, AJ, 110, 880) at redshift z=0.18941 (Ho & Kim 2009, ApJS, 184, 398).
Preliminary analysis indicates that the source brightened in gamma rays with a daily flux (E > 100 MeV) of (1.1+/-0.3) x10^-6 ph cm^-2 s^-1 (errors are statistical only) on 2014 November 20, about a factor of 15 greater than the average flux reported in the second Fermi LAT catalog.
Because Fermi operates in an all-sky scanning mode, regular gamma-ray monitoring of this source will continue. This source is being added to the "LAT Monitored Sources" and a preliminary estimate of the daily gamma-ray flux observed by Fermi LAT will be publicly available (Monitored Source List Light Curves ). In consideration of the ongoing activity of this source we encourage multiwavelength observations. For this source the Fermi LAT contact person is F. D'Ammando (dammando@ira.inaf.it).
The Fermi LAT is a pair conversion telescope designed to cover the energy band from 20 MeV to greater than 300 GeV. It is the product of an international collaboration between NASA and DOE in the U.S. and many scientific institutions across France, Italy, Japan and Sweden.
