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ON THE BLACK HOLE MASS-X-RAY EXCESS VARIANCE SCALING RELATION FOR ACTIVE GALACTIC NUCLEI IN THE LOW-MASS REGIME
Pan, Hai-Wu1,2; Yuan, Weimin1; Zhou, Xin-Lin1; Dong XB(董小波)3; Liu, Bifang1
Source PublicationASTROPHYSICAL JOURNAL
2015-08-01
Volume808Issue:2
DOI10.1088/0004-637X/808/2/163
Contribution Rank第3完成单位
Indexed BySCI
KeywordGalaxies: Active Galaxies: Nuclei X-rays: Galaxies
Abstract

Recent studies of active galactic nuclei (AGNs) found a statistically inverse linear scaling between the X-ray normalized excess variance sigma(2)(rms) (variability amplitude) and the black hole (BH) mass spanning over M-BH = 10(6)-10(9) M-circle dot. Suggested as having a small scatter, this scaling relation may provide a novel method to estimate the BH mass of AGNs. However, a question arises as to whether this relation can be extended to the low-mass regime below similar to 10(6) M-circle dot. If confirmed, it would provide an efficient tool to search for AGNs with low-mass BHs using X-ray variability. This paper presents a study of the X-ray excess variances for a sample of AGNs with BH masses in the range of 10(5)-10(6)M(circle dot) observed with XMM-Newton and ROSAT, including data both from the archives and from newly preformed observations. It is found that the relation is no longer a simple extrapolation of the linear scaling; instead, the relation starts to flatten at similar to 10(6) M-circle dot toward lower masses. Our result is consistent with the recent finding of Ludlam et al. Such a flattening of the M-BH-sigma(2)(rms) relation is actually expected from the shape of the power spectrum density of AGNs, for which the break frequency is inversely scaled with the mass of BHs.

Funding ProjectNational Natural Science Foundation of China[11473035] ; Chinese Academy of Sciences[XDB09000000] ; ESA ; NASA ; Bundesministerium furBildung, Wissenschaft, Forschung und Technologie (BMBF) ; Max-Planck-Gesellschaft ; National Aeronautics and Space Administration
Funding OrganizationNational Natural Science Foundation of China[11473035] ; Chinese Academy of Sciences[XDB09000000] ; ESA ; NASA ; Bundesministerium furBildung, Wissenschaft, Forschung und Technologie (BMBF) ; Max-Planck-Gesellschaft ; National Aeronautics and Space Administration
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
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000371002400058
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSEYFERT 1 GALAXIES ; XMM-NEWTON ; NARROW-LINE ; VARIABILITY PROPERTIES ; POWER-SPECTRUM ; LUMINOSITY ; AMPLITUDE ; QUASARS ; MCG-6-30-15 ; SAMPLE
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9345
Collection丽江天文观测站(南方基地)
Corresponding AuthorPan, Hai-Wu
Affiliation1.Key Laboratory for Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan, China
Recommended Citation
GB/T 7714
Pan, Hai-Wu,Yuan, Weimin,Zhou, Xin-Lin,et al. ON THE BLACK HOLE MASS-X-RAY EXCESS VARIANCE SCALING RELATION FOR ACTIVE GALACTIC NUCLEI IN THE LOW-MASS REGIME[J]. ASTROPHYSICAL JOURNAL,2015,808(2).
APA Pan, Hai-Wu,Yuan, Weimin,Zhou, Xin-Lin,Dong XB,&Liu, Bifang.(2015).ON THE BLACK HOLE MASS-X-RAY EXCESS VARIANCE SCALING RELATION FOR ACTIVE GALACTIC NUCLEI IN THE LOW-MASS REGIME.ASTROPHYSICAL JOURNAL,808(2).
MLA Pan, Hai-Wu,et al."ON THE BLACK HOLE MASS-X-RAY EXCESS VARIANCE SCALING RELATION FOR ACTIVE GALACTIC NUCLEI IN THE LOW-MASS REGIME".ASTROPHYSICAL JOURNAL 808.2(2015).
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