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On the mean radiative efficiency of accreting massive black holes in AGNs and QSOs

文献类型：期刊论文

作者Zhang, XiaoXia1,2; Lu, YouJun1,2
刊名SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
出版日期2017-10-01
卷号60期号:10
关键词Black Hole Galaxies Quasars
DOI10.1007/s11433-017-9062-1
文献子类Article
英文摘要Radiative efficiency is an important physical parameter that describes the fraction of accretion material converted to radiative energy for accretion onto massive black holes (MBHs). With the simplest Soltan argument, the radiative efficiency of MBHs can be estimated by matching the mass density of MBHs in the local universe to the accreted mass density by MBHs during AGN/QSO phases. In this paper, we estimate the local MBH mass density through a combination of various determinations of the correlations between the masses of MBHs and the properties of MBH host galaxies, with the distribution functions of those galaxy properties. We also estimate the total energy density radiated by AGNs and QSOs by using various AGN/QSO X-ray luminosity functions in the literature. We then obtain several hundred estimates of the mean radiative efficiency of AGNs/QSOs. Under the assumption that those estimates are independent of each other and free of systematic effects, we apply the median statistics as described by Gott et al. and find the mean radiative efficiency of AGNs/QSOs is epsilon = 0.1050(.008)(+0.006), which is consistent with the canonical value similar to 0.1. Considering that about 20% Compton-thick objects may be missed from current available X-ray surveys, the true mean radiative efficiency may be actually similar to 0.12.
WOS关键词ACTIVE GALACTIC NUCLEI ; RAY LUMINOSITY FUNCTION ; COSMOLOGICAL EVOLUTION ; ABSORBED AGNS ; DUTY CYCLES ; CONSTRAINTS ; GALAXIES ; BULGES ; MODELS ; GROWTH
WOS研究方向Physics
语种英语
WOS记录号WOS:000408429100004
资助机构National Key Program for Science and Technology Research and Development(2016YFA0400704) ; National Key Program for Science and Technology Research and Development(2016YFA0400704) ; National Natural Science Foundation of China(11373031 ; National Natural Science Foundation of China(11373031 ; Strategic Priority Program of the Chinese Academy of Sciences(XDB 23040100) ; Strategic Priority Program of the Chinese Academy of Sciences(XDB 23040100) ; 11390372) ; 11390372) ; National Key Program for Science and Technology Research and Development(2016YFA0400704) ; National Key Program for Science and Technology Research and Development(2016YFA0400704) ; National Natural Science Foundation of China(11373031 ; National Natural Science Foundation of China(11373031 ; Strategic Priority Program of the Chinese Academy of Sciences(XDB 23040100) ; Strategic Priority Program of the Chinese Academy of Sciences(XDB 23040100) ; 11390372) ; 11390372)
源URL[http://ir.bao.ac.cn/handle/114a11/20134]  
专题国家天文台_月球与深空探测研究部
作者单位1.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, XiaoXia,Lu, YouJun. On the mean radiative efficiency of accreting massive black holes in AGNs and QSOs[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2017,60(10).
APA Zhang, XiaoXia,&Lu, YouJun.(2017).On the mean radiative efficiency of accreting massive black holes in AGNs and QSOs.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,60(10).
MLA Zhang, XiaoXia,et al."On the mean radiative efficiency of accreting massive black holes in AGNs and QSOs".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 60.10(2017).

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