Really focused stellar winds in X-ray binaries
1 Astronomical Institute, Academy of Sciences, Boční II 1401, 14131 Praha 4, Czech Republic
2 Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
Received: 2 November 2010
Accepted: 23 March 2012
Aims. We investigate the anisotropy of stellar winds in binaries to improve the models of accretion in high-mass X-ray binaries.
Methods. We model numerically the stellar wind from a supergiant component of a binary in radial and three-dimensional radiation hydrodynamic approximation taking into account the Roche potential, Coriolis force, and radiative pressure in the continuum and spectral lines.
Results. The Coriolis force influences substantially the mass loss and thus also the accretion rate. The focusing of the stellar wind by the gravitational field of the compact companion leads to the formation of a gaseous tail behind the companion.
Key words: accretion, accretion disks / hydrodynamics / methods: numerical / stars: winds, outflows / X-rays: binaries
© ESO, 2012