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Fermi LAT Detection of a New Gamma-ray Source PKS 1824-582

ATel #6067; Buson Sara (INFN / Univ. of Padova)
on 13 Apr 2014; 20:16 UT
Credential Certification: Sara Buson (buson@pd.infn.it)

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

Referred to by ATel #: 6076, 9471

The Large Area Telescope (LAT), one of the two instruments on the Fermi Gamma-ray Space Telescope, has observed significant gamma-ray emission from a source positionally consistent with the extragalactic radio source PKS 1824-582 with coordinates RA=18h29m12.4023s, Dec=-58d13m55.161s (J2000; Fey et al. 2006, AJ, 132, 1944). This source is classified as an FSRQ at a redshift of 1.531 (Healey et al. 2008, ApJS, 175, 97).

Preliminary analysis indicates that on 2014 April 11, the source was observed with a daily averaged flux (E>100MeV) of (0.8 +/- 0.2) x 10^-6 photons cm^-2 s^-1 and a photon index of 2.1+/-0.2 (errors are statistical only). This source is not in any published LAT catalog and was not detected by EGRET.

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. The Fermi LAT contact person is Sara Buson (buson@pd.infn.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.