SIMBAD references

2015MNRAS.452..520D - Mon. Not. R. Astron. Soc., 452, 520-524 (2015/September-1)

The first γ-ray detection of the narrow-line Seyfert 1 FBQS J1644+2619.

D'AMMANDO F., ORIENTI M., LARSSON J. and GIROLETTI M.

Abstract (from CDS):

We report the discovery of γ-ray emission from the narrow-line Seyfert 1 (NLSy1) galaxy FBQS J1644+2619 by the Large Area Telescope on board the Fermi satellite. The Third Fermi LAT Source catalogue reports an unidentified γ-ray source, detected over the first four years of Fermi operation, 0 _.^○23 from the radio position of the NLSy1. Analysing 76 months of γ-ray data (2008 August 4-2014 December 31) we are able to better constrain the localization of the γ-ray source. The new position of the γ-ray source is 0 _.^○05 from FBQS J1644+2619, suggesting a spatial association with the NLSy1. This is the sixth NLSy1 detected at high significance by Fermi-LAT so far. Notably, a significant increase of activity was observed in γ-rays from FBQS J1644+2619 during 2012 July-October, and an increase of activity in the V band was detected by the Catalina Real-Time Sky Survey in the same period.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): galaxies: active - galaxies: individual: FBQS J1644+2619 - galaxies: nuclei - galaxies: Seyfert - gamma-rays: general

Simbad objects: 8

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2019.10.23-03:21:12

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