A new method to measure the virial factors in the reverberation mapping of active galactic nuclei
文献类型：期刊论文
| 作者 | Liu HT(刘洪涛)1,3,4 ; Feng HC(封海成)1,2,3; Bai JM(白金明)1,3,4
|
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 466期号:3页码:3323-3330 |
| ISSN号 | 0035-8711 |
| 关键词 | black hole physics galaxies: active galaxies: nuclei quasars: emission lines galaxies: Seyfert |
| 通讯作者 | Liu, H. T.(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Guandu Dist 650216, Kunming, Peoples R China) |
| 产权排序 | 第1完成单位 |
| 英文摘要 | 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. |
| 学科主题 | 天文学 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | BLACK-HOLE MASS ; BROAD-LINE REGION ; DIGITAL SKY SURVEY ; HIGH ACCRETION RATES ; SEYFERT 1 GALAXIES ; VELOCITY DISPERSION ; EMISSION-LINES ; GRAVITATIONAL REDSHIFT ; PROFILE VARIATIONS ; LUMINOUS QUASARS |
| 收录类别 | SCI |
| 原文出处 | https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stw3261 |
| 语种 | 英语 |
| WOS记录号 | WOS:000398418600056 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/10028]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。