On angular momentum transport in convection-dominated accretion flows

被引：16
|
作者：
Igumenshchev, IV [1 ]
机构：
[1] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA
来源：
ASTROPHYSICAL JOURNAL | 2002年 / 577卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
accretion; accretion disks; black hole physics; convection; hydrodynamics; MHD; turbulence;
D O I：
10.1086/344148
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Convection-dominated accretion flow (CDAF) is a promising model to explain underluminous accreting black holes in X-ray binaries and galactic nuclei. I discuss the effects of angular momentum transport in viscous hydrodynamical and MHD CDAFs. In hydrodynamical CDAFs, convection transports angular momentum inward, and this, together with the outward convection transport of thermal energy, determine the radial structure of the flow. In MHD CDAFs, convection can transport angular momentum either inward or outward, depending on the properties of turbulence in rotating magnetized plasma, which are not fully understood yet. The direction of convection angular momentum transport can affect the law of rotation of MHD CDAFs.
引用
收藏
页码：L31 / L34
页数：4
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