Fermi LAT detection of a GeV flare from FSRQ PMN J0017-0512
ATel #5089; Elisa Antolini (INFN/Univ. Perugia) and D. Bastieri (INFN/Univ. Padova) on behalf of the Fermi LAT Collaboration
on 27 May 2013; 09:41 UT
Credential Certification: Denis Bastieri (denis.bastieri@pd.infn.it)
Subjects: Gamma Ray, >GeV, AGN, Blazar
Referred to by ATel #: 5093
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 PMN J0017-0512, R.A.= 00h17m35.8172s,
Dec.= -05d12m41.767s (J2000.0, Kovalev et al. 2007, AJ 133, 1236),
a flat spectrum radio quasar at redshift z = 0.227 (Healey et al. 2008, ApJS 175, 97).
Preliminary analysis indicates that on 2013 May 25 the source was in a
flaring state, with a daily gamma-ray flux (E > 100 MeV) of (2.0 +/- 0.4) x
10^-6 ph cm^-2 s^-1 (statistical uncertainty only), which represents an
increase of a factor of 50 with respect to the average flux of 2FGL J0017.6-0510, the gamma-ray counterpart (Nolan et al. 2012, ApJS 199, 31).
Since Fermi operates in an all-sky scanning mode, regular monitoring of
this source will continue. In consideration of the ongoing activity of this
source we strongly encourage multiwavelength observations. The Fermi LAT
contact person for this source is Elisa Antolini (elisa.antolini@fisica.unipg.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.
