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Jet production in black hole X-ray binaries and active galactic nuclei: mass feeding and advection of magnetic fields
Cao, Xinwu1,2,3; Lai, Dong4
2019-05-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume485Issue:2Pages:1916-1923
Corresponding AuthorCao, Xinwu(cxw@shao.ac.cn)
AbstractRelativistic 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.
Keywordaccretion, accretion discs black hole physics magnetic fields galaxies: active galaxies: jets X-rays: binaries
DOI10.1093/mnras/stz580
WOS KeywordDISC INSTABILITY MODEL ; NARROW-LINE QUASAR ; RADIO-LOUD ; ACCRETION DISCS ; VERTICAL STRUCTURE ; COLLAPSING STAR ; PRANDTL NUMBER ; GX 339-4 ; ENERGY ; STATES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000474886200030
PublisherOXFORD UNIV PRESS
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/27345
Collection中国科学院紫金山天文台
Corresponding AuthorCao, Xinwu
Affiliation1.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
Recommended Citation
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.
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