English

Super-Eddington Black-Hole Models for SS 433

Astrophysics 2015-06-24 v1

Abstract

We examine highly super-Eddington black-hole models for SS 433, based on two-dimensional hydrodynamical calculations coupled with radiation transport. The super-Eddington accretion flow with a small viscosity parameter, α=103\alpha = 10^{-3}, results in a geometrically and optically thick disk with a large opening angle of 60\sim 60^{\circ} to the equatorial plane and a very rarefied, hot, and optically thin high-velocity jets region around the disk. The thick accretion flow consists of two different zones: an inner advection-dominated zone and an outer convection-dominated zone. The high-velocity region around the disk is divided into two characteristic regions, a very rarefied funnel region along the rotational axis and a moderately rarefied high-velocity region outside of the disk. The temperatures of 107\sim 10^7 K and the densities of 107\sim 10^{-7} g cm3^{-3} in the upper disk vary sharply to 108\sim 10^8 K and 10810^{-8} g cm3^{-3}, respectively, across the disk boundary between the disk and the high-velocity region. The X-ray emission of iron lines would be generated only in a confined region between the funnel wall and the photospheric disk boundary, where flows are accelerated to relativistic velocities of \sim 0.2 cc due to the dominant radiation-pressure force. The results are discussed regarding the collimation angle of the jets, the large mass-outflow rate obserevd in SS 433, and the ADAFs and the CDAFs models.

Keywords

Cite

@article{arxiv.astro-ph/0202446,
  title  = {Super-Eddington Black-Hole Models for SS 433},
  author = {Toru Okuda},
  journal= {arXiv preprint arXiv:astro-ph/0202446},
  year   = {2015}
}

Comments

19 pages, 11 figures, to be published in Publ. Astron. Soc. Japan, 2002

R2 v1 2026-07-22T08:08:14.500Z