Hot accretion flow with anisotropic viscosity

doi:10.1051/0004-6361/201730803

CORC > 上海天文台 > 中国科学院上海天文台

	Hot accretion flow with anisotropic viscosity
	Wu, Mao-Chun 2; Bu, De-Fu 2; Gan, Zhao-Ming 2; Yuan, Ye-Fei 1
刊名	ASTRONOMY & ASTROPHYSICS
	2017-12-13
卷号	608
关键词	Accretion, Accretion Disks Black Hole Physics Hydrodynamics Ism: Jets And Outflows Conduction
ISSN号	1432-0746
DOI	10.1051/0004-6361/201730803
英文摘要	In extremely low accretion rate systems, the ion mean-free path can be much larger than the gyroradius. Therefore, gas pressure is anisotropic with respect to magnetic field lines. The effects of pressure anisotropy can be modeled by an anisotropic viscosity with respect to magnetic field lines. Angular momentum can be transferred by anisotropic viscosity. In this paper, we investigate hot accretion flow with anisotropic viscosity. We consider the case that anisotropic viscous stress is much larger than Maxwell stress. We find that the flow is convectively unstable. We also find that the mass inflow rate decreases towards a black hole. Wind is very weak; its mass flux is 10-15% of the mass inflow rate. The inward decrease of inflow rate is mainly due to convective motions. This result may be useful to understand the accretion flow in the Galactic Center Sgr A* and M 87 galaxy.
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	EDP SCIENCES S A
WOS记录号	WOS:000418458600008
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32459]
专题	中国科学院上海天文台
通讯作者	Wu, Mao-Chun
作者单位	1.Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Wu, Mao-Chun,Bu, De-Fu,Gan, Zhao-Ming,et al. Hot accretion flow with anisotropic viscosity[J]. ASTRONOMY & ASTROPHYSICS,2017,608.
APA	Wu, Mao-Chun,Bu, De-Fu,Gan, Zhao-Ming,&Yuan, Ye-Fei.(2017).Hot accretion flow with anisotropic viscosity.ASTRONOMY & ASTROPHYSICS,608.
MLA	Wu, Mao-Chun,et al."Hot accretion flow with anisotropic viscosity".ASTRONOMY & ASTROPHYSICS 608(2017).