Jet production in black hole X-ray binaries and active galactic nuclei: mass feeding and advection of magnetic fields
文献类型：期刊论文
| 作者 | Cao, Xinwu1,2,3; Lai, Dong4 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2019-05-01 |
| 卷号 | 485期号:2页码:1916-1923 |
| ISSN号 | 0035-8711 |
| 关键词 | accretion, accretion discs black hole physics magnetic fields galaxies: active galaxies: jets X-rays: binaries |
| 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 |
| 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. |
入库方式： OAI收割
来源：紫金山天文台
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