Jet production in black hole X-ray binaries and active galactic nuclei: mass feeding and advection of magnetic fields

doi:10.1093/mnras/stz580

	Jet production in black hole X-ray binaries and active galactic nuclei: mass feeding and advection of magnetic fields
	Cao, Xinwu 1,2,3; Lai, Dong 4
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2019-05-01
卷号	485 期号:2 页码:1916-1923
关键词	accretion, accretion discs black hole physics magnetic fields galaxies: active galaxies: jets X-rays: binaries
ISSN号	0035-8711
DOI	10.1093/mnras/stz580
通讯作者	Cao, Xinwu(cxw@shao.ac.cn)
英文摘要	Relativistic jets are observed only in the low/hard and intermediate states of X-ray binaries (XRBs), and are switched off in the thermal state, but they appear to be present in both low-luminosity and luminous active galactic nuclei (AGNs). It is widely believed that strong large-scale magnetic fields are a crucial ingredient in jet production; such fields can be attained only through efficient advection from the outer disc. We suggest that geometrically thin accretion discs with magnetic outflows are present in luminous radio-loud AGNs; this is likely because the interstellar medium provides both mass and sufficient magnetic flux to the outer disc. Most angular momentum of such disc is removed by the outflows, and the radial velocity of the disc is significantly increased compared to viscous drift velocity. This facilitates efficient magnetic field advection through the disc to produce a strong field near the black hole in luminous AGNs, which helps launch relativistic jets. In XRBs, the magnetic fields of the gas from companion stars are too weak to drive outflows from outer discs. Jets are therefore switched off in the thermal state due to inefficient magnetic field advection in the disc.
WOS关键词	DISC INSTABILITY MODEL ; NARROW-LINE QUASAR ; RADIO-LOUD ; ACCRETION DISCS ; VERTICAL STRUCTURE ; COLLAPSING STAR ; PRANDTL NUMBER ; GX 339-4 ; ENERGY ; STATES
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000474886200030
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/27344]
专题	中国科学院紫金山天文台
通讯作者	Cao, Xinwu
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Cornell Univ, Dept Astron, Cornell Ctr Astrophys & Planetary Sci, Ithaca, NY 14853 USA
推荐引用方式 GB/T 7714	Cao, Xinwu,Lai, Dong. Jet production in black hole X-ray binaries and active galactic nuclei: mass feeding and advection of magnetic fields[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,485(2):1916-1923.
APA	Cao, Xinwu,&Lai, Dong.(2019).Jet production in black hole X-ray binaries and active galactic nuclei: mass feeding and advection of magnetic fields.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,485(2),1916-1923.
MLA	Cao, Xinwu,et al."Jet production in black hole X-ray binaries and active galactic nuclei: mass feeding and advection of magnetic fields".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 485.2(2019):1916-1923.