Portal de Periódicos da CAPES

Eclipsing and Precessional Light Curves of SS 433 with Superdisks

2001; Oxford University Press; Volume: 53; Issue: 4 Linguagem: Inglês

10.1093/pasj/53.4.679

2053-051X

Yasuo Hirai, Jun Fukue,

Pulsars and Gravitational Waves Research

Abstract We theoretically calculated light curves of SS 433 during eclipse and precession, under a picture in which SS 433 consists of a geometrically thick superdisk around a compact star and a companion star filling its Roche lobe. The main parameters are the binary mass ratio, the relative thickness of the superdisk, and the surface temperature of the companion. Combinations of eclipsing and precessional light curves impose constraints on the parameter ranges. The favorite values of the parameters are a mass ratio of about 1 to 1.5 (a compact star is a black hole), a relative disk-thickness of about $ {25{}^{\mathrm {\circ }}}$, and a companion surface-temperature of 14000–20000 K.