NuSTAR Observations of V404 Cygnus in Outburst
Abstract
The Galactic LMXB V404 Cygnus, one of the closest known black hole binary systems, went through its first major outburst in ~25 years in summer 2015. Over the course of this event, the NuSTAR observatory played an active role in the substantial multi-wavelength campaign initiated, performing a series of exposures covering a span of several weeks. These observations revealed extreme variability on both long and short timescales, as well as complex broadband X-ray spectra. More recently, after having returned to quiescence, V404 Cygnus also exhibited an unexpected re-brightening only ~6 months later. In this talk I will present an overview of the NuSTAR campaign, and discuss some early results from these observations.
- Publication:
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AAS/High Energy Astrophysics Division #15
- Pub Date:
- April 2016
- Bibcode:
- 2016HEAD...1510908W