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On the mean radiative efficiency of accreting massive black holes in AGNs and QSOs
Zhang, XiaoXia1,2; Lu, YouJun1,2
2017-10-01
发表期刊SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
卷号60期号:10
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.
文章类型Article
关键词Black Hole Galaxies Quasars
WOS标题词Science & Technology ; Physical Sciences
资助者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)
DOI10.1007/s11433-017-9062-1
关键词[WOS]ACTIVE GALACTIC NUCLEI ; RAY LUMINOSITY FUNCTION ; COSMOLOGICAL EVOLUTION ; ABSORBED AGNS ; DUTY CYCLES ; CONSTRAINTS ; GALAXIES ; BULGES ; MODELS ; GROWTH
收录类别SCI
语种英语
资助者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)
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000408429100004
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/20134
专题月球与深空探测研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, 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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