YNAO OpenIR  > 丽江天文观测站(南方基地)
A new method to measure the virial factors in the reverberation mapping of active galactic nuclei
Liu HT(刘洪涛)1,3,4; Feng HC(封海成)1,2,3; Bai JM(白金明)1,3,4
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2017-04-01
Volume466Issue:3Pages:3323-3330
DOI10.1093/mnras/stw3261
Contribution Rank第1完成单位
Indexed BySCI
KeywordBlack Hole Physics Galaxies: Active Galaxies: Nuclei Quasars: Emission Lines Galaxies: Seyfert
Abstract

Based on the gravitational red shift, which is a prediction of Einstein's general relativity theory, of broad optical emission lines in active galactic nuclei (AGNs), a new method is proposed to estimate the virial factors f in measuring black hole massesM(RM) by the reverberation mapping of AGNs. The factors f can be measured based on two physical quantities, i.e. the gravitational red shifts z(g) and the full widths at half maxima vFWHM of broad lines. In the past, it has been difficult to determine the factors f for individual AGNs. We apply this new method to several reverberation- mapped type 1 Seyfert galaxies. There is a correlation between f and the radius of the broad-line region (BLR) r(BLR), f = 5.4r(BLR)(0.3), for the gravitationally red-shifted broad lines He II, HeI, H beta and H alpha in the narrow-line type 1 Seyfert galaxy (NLS1) Mrk 110. This correlation results from the influence of the radiation pressure of the accretion disc on the BLR clouds. This influence seems to be more important than usually thought so in AGNs. Mrk 110 has f approximate to 8-16, distinctly larger than the mean (f) approximate to 1 usually used to estimate M-RM for v(FWHM.) NGC 4593 and NLS1 Mrk 486 have f approximate to 3 and f approximate to 9, respectively. Higher f values of several tens are derived for three other NLS1s. There is a correlation between f and accretion rate U-f=1, f = 6.8M(f= 1)(0.4) for five objects, where U-f=1 = M-center dot/L-Edd(c-2) as f = 1 is assumed when estimating MRM used in the Eddington luminosity L-Edd, M-center dot is the mass accretion rate, and c is the speed of light. These larger f values will produce higher MRM values and lower Eddington ratios.

Funding ProjectNational Natural Science Foundation of China (NSFC)[11273052] ; National Natural Science Foundation of China (NSFC)[U1431228] ; NSFC[11133006] ; Training Programme for the Talents of West Light Foundation ; Chinese Academy of Sciences (CAS) ; Youth Innovation Promotion Association, CAS.
Funding OrganizationNational Natural Science Foundation of China (NSFC)[11273052, U1431228] ; NSFC[11133006] ; Training Programme for the Talents of West Light Foundation ; Chinese Academy of Sciences (CAS) ; Youth Innovation Promotion Association, CAS.
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000398418600056
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBLACK-HOLE MASS ; BROAD-LINE REGION ; DIGITAL SKY SURVEY ; HIGH ACCRETION RATES ; SEYFERT 1 GALAXIES ; VELOCITY DISPERSION ; EMISSION-LINES ; GRAVITATIONAL REDSHIFT ; PROFILE VARIATIONS ; LUMINOUS QUASARS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10028
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorLiu HT(刘洪涛)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
2.University of Chinese Academy of Sciences, Beijing 100049, P. R. China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu HT,Feng HC,Bai JM. A new method to measure the virial factors in the reverberation mapping of active galactic nuclei[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,466(3):3323-3330.
APA Liu HT,Feng HC,&Bai JM.(2017).A new method to measure the virial factors in the reverberation mapping of active galactic nuclei.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,466(3),3323-3330.
MLA Liu HT,et al."A new method to measure the virial factors in the reverberation mapping of active galactic nuclei".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 466.3(2017):3323-3330.
Files in This Item:
File Name/Size DocType Version Access License
A new method to meas(575KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu HT(刘洪涛)]'s Articles
[Feng HC(封海成)]'s Articles
[Bai JM(白金明)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu HT(刘洪涛)]'s Articles
[Feng HC(封海成)]'s Articles
[Bai JM(白金明)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu HT(刘洪涛)]'s Articles
[Feng HC(封海成)]'s Articles
[Bai JM(白金明)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: A new method to measure the virial factors in the reverberation mapping of active galactic nuclei.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.