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A NEW APPROACH TO CONSTRAIN BLACK HOLE SPINS IN ACTIVE GALAXIES USING OPTICAL REVERBERATION MAPPING
Wang, JM1,2; Du, P1; Li, YR1; Ho, LC3,4; Hu, C1; Bai JM(白金明)5; Wang, JM (reprint author), Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, 19B Yuquan Rd, Beijing 100049, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2014-09-01
卷号792期号:1
DOI10.1088/2041-8205/792/1/L13
产权排序第5完成单位
收录类别SCI
关键词Galaxies: Active Accretion Accretion Disks
摘要A tight relation between the size of the broad-line region (BLR) and optical luminosity has been established in about 50 active galactic nuclei studied through reverberation mapping of the broad H beta emission line. The R-BLR-L relation arises from simple photoionization considerations. Using a general relativistic model of an optically thick, geometrically thin accretion disk, we show that the ionizing luminosity jointly depends on black hole mass, accretion rate, and spin. The non-monotonic relation between the ionizing and optical luminosity gives rise to a complicated relation between the BLR size and the optical luminosity. We show that the reverberation lag of H beta to the varying continuum depends very sensitively on black hole spin. For retrograde spins, the disk is so cold that there is a deficit of ionizing photons in the BLR, resulting in shrinkage of the hydrogen ionization front with increasing optical luminosity, and hence shortened H beta lags. This effect is specially striking for luminous quasars undergoing retrograde accretion, manifesting in strong deviations from the canonical R-BLR-L relation. This could lead to a method to estimate black hole spins of quasars and to study their cosmic evolution. At the same time, the small scatter of the observed R-BLR-L relation for the current sample of reverberation-mapped active galaxies implies that the majority of these sources have rapidly spinning black holes.
项目资助者Strategic Priority Research Program-The Emergence of Cosmological Structures of the Chinese Academy of Sciences [XDB09000000] ; NSFC [NSFC-11173023, NSFC-11133006, NSFC-11233003] ; Israel-China ISF-NSFC [83/13] ; Kavli Foundation ; Peking University
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN2041-8205
URL查看原文
WOS记录号WOS:000341306900013
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EMISSION-LINE REGIONS ; GALACTIC NUCLEI ; ACCRETION DISKS ; COSMOLOGICAL EVOLUTION ; SEYFERT-GALAXIES ; CORONA MODEL ; QUASARS ; TURBULENCE ; RADIUS ; SIZE
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5443
专题丽江天文观测站(南方基地)
通讯作者Wang, JM (reprint author), Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, 19B Yuquan Rd, Beijing 100049, Peoples R China.
作者单位1.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China
2.National Astronomical Observatories of China, Chinese Academy of Sciences, 20A Datun Road, Beijing 100020, China
3.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100875, China
4.Department of Astronomy, Peking University, Beijing 100875, China
5.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
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GB/T 7714
Wang, JM,Du, P,Li, YR,et al. A NEW APPROACH TO CONSTRAIN BLACK HOLE SPINS IN ACTIVE GALAXIES USING OPTICAL REVERBERATION MAPPING[J]. ASTROPHYSICAL JOURNAL LETTERS,2014,792(1).
APA Wang, JM.,Du, P.,Li, YR.,Ho, LC.,Hu, C.,...&Wang, JM .(2014).A NEW APPROACH TO CONSTRAIN BLACK HOLE SPINS IN ACTIVE GALAXIES USING OPTICAL REVERBERATION MAPPING.ASTROPHYSICAL JOURNAL LETTERS,792(1).
MLA Wang, JM,et al."A NEW APPROACH TO CONSTRAIN BLACK HOLE SPINS IN ACTIVE GALAXIES USING OPTICAL REVERBERATION MAPPING".ASTROPHYSICAL JOURNAL LETTERS 792.1(2014).
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