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题名: Is radio jet power linearly proportional to the product of central black hole mass and Eddington ratio in AGN?
作者: Liu, Xiang1, 2; Han, Zhenhua1, 3
刊名: ASTROPHYSICS AND SPACE SCIENCE
出版日期: 2014-12-01
卷号: 354, 期号:2, 页码:553-560
关键词: Black hole physics ; Galaxies: jets ; Quasars: general ; Accretion, accretion disks
DOI: 10.1007/s10509-014-2102-9
文章类型: Article
英文摘要: A model for the relation between radio jet power and the product of central black hole (BH) mass and Eddington ratio of AGN is proposed, and the model is examined with data from the literature. We find that radio jet power positively correlates but not linearly with the product of BH mass (m in solar mass) and Eddington ratio (lambda), and the power law indices (mu) are significantly less than unity for relatively low accretion (lambda < 0.1) AGN, P (j) ae(lambda m) (mu) , in the radio galaxies and the Seyfert galaxies. This leads to a negative correlation between radio loudness and lambda m for the low luminosity AGN, i.e. Rae(lambda m) (rho) with rho=(7/6)mu-1 < 0, which may be attributed to a contribution of BH spin to total jet power assuming that the spin induced jet is gradually suppressed as the accretion rate increases. Whereas, for the high-z quasars which often show the slope mu a parts per thousand yen1, a positive correlation between the radio loudness and disc luminosity is predicted. We discuss that the jet powers of the high-z FRII quasars are likely dominated by the accretion disc rather than by the BH spin.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: ACTIVE GALACTIC NUCLEI ; OBSERVATIONAL CONSTRAINTS ; ELLIPTIC GALAXIES ; ACCRETION DISKS ; EMISSION-LINE ; SPIN ; MECHANISM ; LOUDNESS ; ENERGY ; FLOWS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000345395400031
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15646
Appears in Collections:暗物质和空间天文实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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