中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Fast inflows as the adjacent fuel of supermassive black hole accretion disks in quasars

文献类型:期刊论文

作者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
刊名NATURE
出版日期2019-09-05
卷号573期号:7772页码:83-+
ISSN号0028-0836
DOI10.1038/s41586-019-1510-y
产权排序第8完成单位
文献子类Article
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.

学科主题天文学 ; 天体物理学 ; 高能天体物理学
URL标识查看原文
出版地MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
WOS关键词BROAD ABSORPTION-LINE ; PEAKED EMISSION-LINES ; ACTIVE GALAXIES ; SPECTRA ; ULTRAVIOLET ; LUMINOSITY ; RELEASE ; MASSES
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 ; 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]
源URL[http://ir.ynao.ac.cn/handle/114a53/21149]  
专题云南天文台_自由探索组
云南天文台_中国科学院天体结构与演化重点实验室
通讯作者Zhou, Hongyan; Yuan, Weimin; Wang, Tinggui
作者单位1.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
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-+.

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来源:云南天文台

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