SS 433 - The parameters of the eclipsing system with a precessing thick accretion disk

Details SS 433 - The parameters of the eclipsing system with a precessing thick accretion disk SS 433 - The parameters of the eclipsing system with a precessing thick accretion disk

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987azh....64..562a&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 64, May-June 1987, p. 562-585. In Russian.

Astronomy and Astrophysics

Astronomy

22

Accretion Disks, Black Holes (Astronomy), Eclipsing Binary Stars, Optical Thickness, Precession, Stellar Models, Light Curve, Roche Limit, Stellar Atmospheres, Stellar Mass Accretion, Visible Spectrum

Scientific paper

The inverse problem for the interpretation of the optical light curves of SS433 is solved in the framework of the Roche model with the {precessing} geometrically thick accretion disk. The shape of the disk is approximated by an oblate spheroid with a spherical semi-transparent extended atmosphere expanding at constant velocity. It is shown that the {normal} star fills its Roche Lobe and the mass of the relativistic object mx strongly exceeds 4 M_sun;, which allows to suggest the presence of a black hole in the system SS433. The most preferable solution taking into account all observational data is: mx = 62 M_sun;, mv = 52 M_sun;, q = 1.2, but the case mx = 8.4 M_sun;, mv = 21 M_sun;, q = 0.4 cannot be excluded too. The bolometric luminosity of the accretion disk lies in the range 1.4×1039 - 1.7×1041erg/s and is close to the critical Eddington limit or strongly exceeds the Eddington limit. The disk is a geometrically thick structure with the oblateness k = 0.2 - 0.5. The polar temperature on the accretion disk lies in the range 40000 - 130000K when the temperature of the {normal} star is changing in the range 16000 - 30000K. All these results allow to suggest that SS433 is a massive black hole in a binary system at the supercritical accretion regime.

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