Correlated X-ray and optical variability during the 2015 super-Eddington outburst of V404 Cyg
Abstract
The 2015 June/July outburst of V404 Cyg was the brightest X-ray transient event ever recorded, but only lasted for barely 2 weeks. During that time V404 Cyg was extensively monitored by INTEGRAL, providing unprecedented soft and hard X-ray (with JEM-X and ISGRI) and optical (with OMC) coverage of this event. A number of dedicated simultaneous observations were also undertaken by NuSTAR and ULTRACAM at high time resolution. Here we give an overview of the remarkable variations that are displayed during the outburst, identifying a number of episodes of correlated X-ray and optical variations which we associate with the inflow of the inner accretion disc, and subsequent ejections of a relativistic jet.
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E.582C