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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; Pan, HW (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, 20A Datun Rd, Beijing, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2015-08-01
卷号808期号:2
DOI10.1088/0004-637X/808/2/163
产权排序第3完成单位
收录类别SCI
关键词Galaxies: Active Galaxies: Nuclei X-rays: Galaxies
摘要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.
项目资助者National 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
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000371002400058
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SEYFERT 1 GALAXIES ; XMM-NEWTON ; NARROW-LINE ; VARIABILITY PROPERTIES ; POWER-SPECTRUM ; LUMINOSITY ; AMPLITUDE ; QUASARS ; MCG-6-30-15 ; SAMPLE
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被引频次:6[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/114a53/9345
专题丽江天文观测站(南方基地)
通讯作者Pan, HW (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, 20A Datun Rd, Beijing, Peoples R China.
作者单位1.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
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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,&Pan, HW .(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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