Erratum Title Correction ATEL #6393: Fermi LAT Detection of a New Gamma-ray Source TXS 1731+152A
ATel #6395; J. Becerra (NASA/GSFC/UMCP/CRESST), D. Thompson (GSFC/NASA) on behalf of the Fermi Large Area Telescope Collaboration
on 15 Aug 2014; 21:45 UT
Credential Certification: Josefa Becerra Gonzalez (josefa.becerra@nasa.gov)
Subjects: Gamma Ray, >GeV, AGN, Blazar, Transient
Referred to by ATel #: 6410
There was an erratum on the title of ATEL #6393. Below you can find again the same information:
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 source positionally consistent with the extragalactic radio source TXS 1731+152A with coordinates 17h33m22.640s +15d13m21.80s (J2000; Condon et al. 1998, AJ, 115, 1693). This source is classified as a flat spectrum radio quasar (Healey et al. 2007, ApJS, 171, 61). Its redshift is unknown.
Preliminary analysis indicates that on 2014 August 13, the source was observed with a daily averaged flux (E>100MeV) of (0.7 +/- 0.1) x 10^-6 photons cm^-2 s^-1 and a photon index of 2.5+/-0.2 (errors are statistical only). This source is not in any published LAT catalog and was not detected by EGRET and AGILE. The source had faded by August 14.
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 Josefa Becerra (josefa.Becerra@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.
