The First Discovery of a Variable Magnetic Field in X-ray Binary Cyg X-1=V1357 Cyg
Abstract
ESO Very Large Telescope observations revealed on a high confidence level the presence of a variable magnetic field in the optical component (O-supergiant) and in the outer parts of the accreting structure around BH. This result creates observational basis for models of magnetic disc accretion on BH in X-ray binaries, quasars and other AGN. Scaling measured magnetic field to BH vicinities permits to explain Cyg X-1 X-ray flickering.
- Publication:
-
Information Bulletin on Variable Stars
- Pub Date:
- August 2010
- Bibcode:
- 2010IBVS.5950....1K
- Keywords:
-
- X-ray binary;
- black hole;
- magnetic field