High-energy gamma-ray observations of the accreting black hole V404 Cygni during its June 2015 outburst

Abstract

We report on Fermi/Large Area Telescope observations of the accreting black hole low-mass X-ray binary V404 Cygni during its outburst in June–July 2015. Detailed analyses reveal a possible excess of γ-ray emission on 26 June 2015, with a very soft spectrum above 100 MeV, at a position consistent with the direction of V404 Cyg (within the 95% confidence… (More)

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