Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei IX 10 New Observations of Reverberation Mapping and Shortened H beta Lags

doi:10.3847/1538-4357/aaae6b

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	Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei IX 10 New Observations of Reverberation Mapping and Shortened H beta Lags
	SEAMBH Collaboration
刊名	ASTROPHYSICAL JOURNAL
	2018
卷号	856 期号:1 页码:6
关键词	accretion, accretion disks galaxies: active galaxies: nuclei quasars: supermassive black holes
ISSN号	0004-637X
DOI	10.3847/1538-4357/aaae6b
文献子类	Article
英文摘要	As one paper in a series reporting on a large reverberation mapping campaign of super-Eddington accreting massive black holes (SEAMBHs) in active galactic nuclei (AGNs), we present the results of 10 SEAMBHs monitored spectroscopically during 2015-2017. Six of them are observed for the first time, and have generally higher 5100A luminosities than the SEAMBHs monitored in our campaign from 2012 to 2015; the remaining four are repeat observations to check if their previous lags change. Similar to the previous SEAMBHs, the H beta time lags of the newly observed objects are shorter than the values predicted by the canonical R-H beta-L-5100 relation of sub-Eddington AGNs, by factors of similar to 2-6, depending on the accretion rate. The four previously observed objects have lags consistent with previous measurements. We provide linear regressions for the R-H beta-L-5100 relation, solely for the SEAMBH sample and for low-accretion AGNs. We find that the relative strength of Fe II and the profile of the H beta emission line can be used as proxies of accretion rate, showing that the shortening of H beta lags depends on accretion rates. The recent SDSS-RM discovery of shortened H beta lags in AGNs with low accretion rates provides compelling evidence for retrograde accretion onto the black hole. These evidences show that the canonical R-H beta-L-5100. relation holds only in AGNs with moderate accretion rates. At low accretion rates, it should be revised to include the effects of black hole spin, whereas the accretion rate itself becomes a key factor in the regime of high accretion rates.
电子版国际标准刊号	1538-4357
WOS关键词	BROAD-LINE REGION ; AGN MONITORING PROJECT ; SEYFERT-GALAXIES ; NARROW-LINE ; EMISSION-LINES ; DISK-ACCRETION ; QUASARS ; MASS ; LUMINOSITY ; SIZE
WOS研究方向	Astronomy & Astrophysics
语种	英语
WOS记录号	WOS:000428051200005
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285746]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	SEAMBH Collaboration. Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei IX 10 New Observations of Reverberation Mapping and Shortened H beta Lags[J]. ASTROPHYSICAL JOURNAL,2018,856(1):6.
APA	SEAMBH Collaboration.(2018).Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei IX 10 New Observations of Reverberation Mapping and Shortened H beta Lags.ASTROPHYSICAL JOURNAL,856(1),6.
MLA	SEAMBH Collaboration."Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei IX 10 New Observations of Reverberation Mapping and Shortened H beta Lags".ASTROPHYSICAL JOURNAL 856.1(2018):6.