ON THE BLACK HOLE MASS-X-RAY EXCESS VARIANCE SCALING RELATION FOR ACTIVE GALACTIC NUCLEI IN THE LOW-MASS REGIME
文献类型：期刊论文
| 作者 | Pan, Hai-Wu1,2; Yuan, Weimin1 ; Zhou, Xin-Lin1; Dong XB(董小波)3; Liu, Bifang1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2015-08-01 |
| 卷号 | 808期号:2 |
| 关键词 | galaxies: active galaxies: nuclei X-rays: galaxies |
| ISSN号 | 0004-637X |
| 产权排序 | 第三完成单位 |
| 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | 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 |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/0004-637X/808/2/163/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000371002400058 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9345]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 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 |
| 推荐引用方式 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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来源：云南天文台
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