The Relation between the Inclinations of Broad Line Regions and the Accretion Disk

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	The Relation between the Inclinations of Broad Line Regions and the Accretion Disk
	Bian Weihao
刊名	Chinese Journal of Astronomy and Astrophysics
	2005
卷号	5 期号:1 页码:21
ISSN号	1009-9271
英文摘要	According to the standard model, an active galactic nucleus (AGN) consists of an inner accretion disk with a jet around a central massive black hole, and a number of outer broad line regions (BLRs) and narrow line regions (NLRs). The geometrical relationship between the BLRs and the accretion disk is not well understood. Assuming the motion of the BLRs is virialized and its configuration is disk-like, we derived its inclination to the line of sight for a sample of AGNs from their bulge stellar velocity dispersion, their size of the BLRs and their H beta linewidth. Compared with the inclination of the accretion disk obtained from the X-ray, Fe K alpha emission lines, we found that there is no positive correlation between the two. Our results showed that BLRs are not coplanar with the accretion disk and that we should be cautious of using the BLRs inclination as the disk inclination. The non-coplanar geometry of the outer BLRs and the inner accretion disk provides clues to the origin of BLRs and the properties of the accretion disk. Our preferable interpretation is that BLRs arise out of the outer part of a warped accretion disk.
语种	英语
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/42073]
专题	中国科学院国家天文台
作者单位	中国科学院国家天文台
推荐引用方式 GB/T 7714	Bian Weihao. The Relation between the Inclinations of Broad Line Regions and the Accretion Disk[J]. Chinese Journal of Astronomy and Astrophysics,2005,5(1):21.
APA	Bian Weihao.(2005).The Relation between the Inclinations of Broad Line Regions and the Accretion Disk.Chinese Journal of Astronomy and Astrophysics,5(1),21.
MLA	Bian Weihao."The Relation between the Inclinations of Broad Line Regions and the Accretion Disk".Chinese Journal of Astronomy and Astrophysics 5.1(2005):21.