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Accretion of stellar winds in high-mass X-ray binaries
- 1.0398868 - ASÚ 2014 GB eng C - Conference Paper (international conference)
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]
R&D Projects: GA ČR GA202/09/0772; GA ČR GD205/09/H033
Institutional support: RVO:67985815
Keywords : stars * winds * outflows * X-rays
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
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.
Permanent Link: http://hdl.handle.net/11104/0226274
Number of the records: 1