[ Previous | Next | ADS ]

ATel draft: Fermi LAT detection of a new Gamma-ray Source PKS 2247-131

ATel #9285; S. Buson (NASA-GSFC) on behalf of the Fermi-LAT collaboration
on 31 Jul 2016; 04:10 UT
Credential Certification: Sara Buson (sara.buson@nasa.gov)

Subjects: Gamma Ray, >GeV, Request for Observations, AGN, Blazar, Transient

Referred to by ATel #: 9620

The Large Area Telescope (LAT), on board the Fermi Gamma-ray Space Telescope, has observed strong gamma-ray emission from a source positionally consistent with the radio source PKS 2247-131 with coordinates RA=342.4983854 deg, Dec=-12.8546736 deg (J2000; Beasley et al. 2002, ApJS, 141, 13). This source is not in any published LAT catalog and was not detected by AGILE or EGRET.

Preliminary analysis indicates that the source brightened in gamma rays on 2016 July 28 and 29 with a peak daily-averaged flux (E > 100 MeV) of (2.0+/-0.3) x10^-6 ph cm^-2 s^-1 (errors are statistical only). The source had an average photon index of 2.1+/-0.1.

Because Fermi operates in an all-sky scanning mode, regular gamma-ray monitoring of this source will continue and its light curve will be available at the Fermi Science Support Center page (see http://fermi.gsfc.nasa.gov/ssc/data/access/lat/msl_lc/ ). In consideration of the activity of this source we encourage multiwavelength observations. For this source the Fermi LAT contact person is S. Buson (sara.buson@nasa.gov).

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.