Accretion of stellar winds in high-mass X-ray binaries

0398868 - ASÚ 2014 GB eng C - Konferenční příspěvek (zahraniční konf.)
Hadrava, Petr - Čechura, Jan
Accretion of stellar winds in high-mass X-ray binaries.
Feeding Compact Objects: Accretion on All Scales. Cambridge Universrity Press: Cambridge, 2013, S.219-220. IAU Symposium Proceedings Series, IAU S290. ISBN 9781107033795. ISSN 1743-9213.
[Symposium of the International Astronomical Union /290./. Beijing (CN), 20.08.2012-24.08.2012]
Grant CEP: GA ČR GA202/09/0772; GA ČR GD205/09/H033
Institucionální podpora: RVO:67985815
Klíčová slova: stars * winds * outflows * X-rays
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

Our analysis of optical spectroscopy of high-mass X-ray binaries like Cyg X-1 confirms that most of the Balmer-lines emission anticorrelated with the X-ray flux originates from the circumstellar matter between the donor star and the accreting compact component. In order to study its structure and variability and the consequent accretion rate we have developed a 3-D numerical model based on radiation hydrodynamics of the supergiant stellar wind. The results show a non-stationary BHL-accretion on the compact component.
Trvalý link: http://hdl.handle.net/11104/0226274