Fermi LAT Detection of a new Gamma-ray source Fermi J0507-5641
ATel #6655; B. Carpenter(NASA/GSFC/Catholic U.), R. Ojha (NASA/GSFC/UMBC/CRESST), on behalf of the Fermi Large Area Telescope Collaboration
on 2 Nov 2014; 04:28 UT
Credential Certification: Roopesh Ojha (Roopesh.Ojha@gmail.com)
Subjects: Gamma Ray, >GeV, AGN, Black Hole, Blazar, Quasar
The Large Area Telescope (LAT), one of the two instruments on the
Fermi Gamma-ray Space Telescope, has observed strong gamma-ray
emission from a new source. The preliminary best-fit location of this
gamma-ray source (RA=76.89 deg, Dec=-56.70 deg, J2000)
has a 95% containment radius of 0.25 deg (errors are statistical only)
for observations on Oct 31, 2014. This source is not in any published
LAT catalog and was not detected by AGILE or EGRET. The closest candidate
counterpart is the radio source PMN J0508-5628 with coordinates
05h08m24.52s -56d28m28.6s (J2000; Mauch et al. 2003, MNRAS, 342, 1117),
at an angular distance of 0.25 deg.
Preliminary analysis indicates that on Oct 31, 2014, the daily
averaged flux (E>100MeV) was (0.4+/-0.1) photons cm^-2 s^-1
respectively (errors are statistical only). The source had a photon
index of (2.4+/-0.1) which is a typical value for LAT-detected Flat
Spectrum Radio Quasars.
Because Fermi operates in an all-sky scanning mode, regular gamma-ray
monitoring of this source will continue. We encourage further
multifrequency observations of this source. For this source the Fermi
LAT contact person is Bryce Carpenter (carpbr01@gmail.com).
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.
