Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...356..591b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 356, June 20, 1990, p. 591-608.
Astronomy and Astrophysics
Astronomy
133
Hydrodynamics, Stellar Mass Accretion, Stellar Winds, X Ray Binaries, Black Holes (Astronomy), Neutron Stars, O Stars, Photoionization, Stellar Gravitation, Stellar Luminosity
Scientific paper
This paper presents two-dimensional numerical simulations of the gas flow in the orbital plane of a massive X-ray binary system, in which the mass accretion is fueled by a radiation-driven wind from an early-type companion star. These simulations are used to examine the role of the compact object (either a neutron star or a black hole) in disturbing the radiatively accelerating wind of the OB companion, with an emphasis on understanding the origin of the observed soft X-ray photoelectric absorption seen at late orbital phases in these systems. On the basis of these simulations, it is suggested that the phase-dependent photoelectric absorption seen in several of these systems can be explained by dense filaments of compressend gas formed in the nonsteady accreation bow shock and wake of the compact object.
Blondin John M.
Fryxell Bruce A.
Kallman Timothy R.
Taam Ronald E.
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