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Fast inflows as the adjacent fuel of supermassive black hole accretion disks in quasars
Zhou, Hongyan1,2,3; Shi, Xiheng1,2; Yuan, Weimin4,5; Hao, Lei6; Chen, Xiangjun2,3; Ge, Jian7; Ji, Tuo1,2; Jiang, Peng1,2; Li, Ge2,3; Liu, Bifang4,5; Liu, Guilin2,3; Liu WJ(刘文娟)8,9; Lu, Honglin2,3; Pan, Xiang1,2; Shen, Juntai6; Shu, Xinwen10; Sun, Luming2,3; Tian, Qiguo1,2; Wang, Huiyuan2,3; Wang, Tinggui2,3; Wu, Shengmiao1,2; Yang, Chenwei1,2; Zhang, Shaohua1,2; Zhong, Zhihao2,3
Source PublicationNATURE
2019-09-05
Volume573Issue:7772Pages:83-+
DOI10.1038/s41586-019-1510-y
Contribution Rank第8完成单位
Indexed BySCI
Abstract

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.

Funding ProjectAlfred 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]
Funding OrganizationAlfred 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]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNATURE PUBLISHING GROUP
Publication PlaceMACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
ISSN0028-0836
URL查看原文
WOS IDWOS:000483967700038
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS KeywordBROAD ABSORPTION-LINE ; PEAKED EMISSION-LINES ; ACTIVE GALAXIES ; SPECTRA ; ULTRAVIOLET ; LUMINOSITY ; RELEASE ; MASSES
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/21150
Collection自由探索组
中国科学院天体结构与演化重点实验室
Corresponding AuthorZhou, Hongyan; Yuan, Weimin; Wang, Tinggui
Affiliation1.Antarctic Astronomy Research Division, Key Laboratory for Polar Science of the State Oceanic Administration, Polar Research Institute of China, Shanghai, China
2.School of Astronomy and Space Sciences, University of Science and Technology of China, Hefei, China
3.Key Laboratory for Research in Galaxies and Cosmology of Chinese Academy of Sciences, Department of Astronomy, University of Science and Technology of China, Hefei, China
4.National Astronomical Observatories of China, Chinese Academy of Sciences, Beijing, China
5.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, China
6.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, China
7.Department of Astronomy, University of Florida, Bryant Space Science Center, Gainesville, FL, USA
8.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China
9.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, China
10.Department of Physics, Anhui Normal University, Wuhu, China
Recommended Citation
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-+.
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