Fast inflows as the adjacent fuel of supermassive black hole accretion disks in quasars

doi:10.1038/s41586-019-1510-y

CORC > 国家天文台 > 中国科学院国家天文台

	Fast inflows as the adjacent fuel of supermassive black hole accretion disks in quasars
	Zhou, Hongyan 1,2,3; Shi, Xiheng 1,2; Yuan, Weimin 4,5; Hao, Lei 6; Chen, Xiangjun 2,3; Ge, Jian 7; Ji, Tuo 1,2; Jiang, Peng 1,2; Li, Ge 2,3; Liu, Bifang 4,5
刊名	NATURE
	2019-09-05
卷号	573 期号:7772 页码:83-+
ISSN号	0028-0836
DOI	10.1038/s41586-019-1510-y
英文摘要	Quasars, which are exceptionally bright objects at the centres (or nuclei) of galaxies, are thought to be produced through the accretion of gas into disks surrounding supermassive black holes(1-3). There is observational evidence at galactic and circumnuclear scales(4) that gas flows inwards towards accretion disks around black holes, and such an inflow has been measured at the scale of the dusty torus that surrounds the central accretion disk(5). At even smaller scales, inflows close to an accretion disk have been suggested to explain the results of recent modelling of the response of gaseous broad emission lines to continuum variations(6,7). However, unambiguous observations of inflows that actually reach accretion disks have been elusive. Here we report the detection of redshifted broad absorption lines of hydrogen and helium atoms in a sample of quasars. The lines show broad ranges of Doppler velocities that extend continuously from zero to redshifts as high as about 5,000 kilometres per second. We interpret this as the inward motion of gases at velocities comparable to freefall speeds close to the black hole, constraining the fastest infalling gas to within 10,000 gravitational radii of the black hole (the gravitational radius being the gravitational constant multiplied by the object mass, divided by the speed of light squared). Extensive photoionization modelling yields a characteristic radial distance of the inflow of approximately 1,000 gravitational radii, possibly overlapping with the outer accretion disk.
资助项目	Alfred P. Sloan Foundation ; US National Science Foundation ; US Department of Energy Office of Science ; National Natural Science Foundation of China[NSFC11473025] ; SOC programme[CHINARE2017-02-03] ; Key Research Program of the Chinese Academy of Sciences[XDPB09-02]
WOS关键词	BROAD ABSORPTION-LINE ; PEAKED EMISSION-LINES ; ACTIVE GALAXIES ; SPECTRA ; ULTRAVIOLET ; LUMINOSITY ; RELEASE ; MASSES
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000483967700038
资助机构	Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; US National Science Foundation ; US National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; SOC programme ; SOC programme ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; US National Science Foundation ; US National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; SOC programme ; SOC programme ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; US National Science Foundation ; US National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; SOC programme ; SOC programme ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; US National Science Foundation ; US National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; SOC programme ; SOC programme ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/27686]
专题	中国科学院国家天文台
通讯作者	Zhou, Hongyan; Yuan, Weimin; Wang, Tinggui
作者单位	1.State Ocean Adm, Polar Res Inst China, Key Lab Polar Sci, Antarctic Astron Res Div, Shanghai, Peoples R China 2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei, Anhui, Peoples R China 3.Univ Sci & Technol China, Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Dept Astron, Hefei, Anhui, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ China, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China 6.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China 7.Univ Florida, Dept Astron, Bryant Space Sci Ctr, Gainesville, FL 32611 USA 8.Chinese Acad Sci, Yunnan Observ, Kunming, Yunnan, Peoples R China 9.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming, Yunnan, Peoples R China 10.Anhui Normal Univ, Dept Phys, Wuhu, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Hongyan,Shi, Xiheng,Yuan, Weimin,et al. Fast inflows as the adjacent fuel of supermassive black hole accretion disks in quasars[J]. NATURE,2019,573(7772):83-+.
APA	Zhou, Hongyan.,Shi, Xiheng.,Yuan, Weimin.,Hao, Lei.,Chen, Xiangjun.,...&Zhong, Zhihao.(2019).Fast inflows as the adjacent fuel of supermassive black hole accretion disks in quasars.NATURE,573(7772),83-+.
MLA	Zhou, Hongyan,et al."Fast inflows as the adjacent fuel of supermassive black hole accretion disks in quasars".NATURE 573.7772(2019):83-+.