Failed Radiatively Accelerated Dusty Outflow Model of the Broad Line Region in Active Galactic Nuclei. I. Analytical Solution

doi:10.3847/1538-4357/aa8810

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	Failed Radiatively Accelerated Dusty Outflow Model of the Broad Line Region in Active Galactic Nuclei. I. Analytical Solution
	Wildy, C; Czerny, B; Li, YR; Hryniewicz, K; Panda, S; Sniegowska, M; Wang, JM; Sredzinska, J; Karas, V; Wang JM(王建民)
刊名	ASTROPHYSICAL JOURNAL
	2017
卷号	846 期号:2 页码:154
关键词	accretion, accretion disks galaxies: active line: formation line: profiles
ISSN号	0004-637X
DOI	10.3847/1538-4357/aa8810
文献子类	Article
英文摘要	The physical origin of the broad line region in active galactic nuclei is still unclear despite many years of observational studies. The reason is that the region is unresolved, and the reverberation mapping results imply a complex velocity field. We adopt a theory-motivated approach to identify the principal mechanism responsible for this complex phenomenon. We consider the possibility that the role of dust is essential. We assume that the local radiation pressure acting on the dust in the accretion disk atmosphere launches the outflow of material, but higher above the disk the irradiation from the central parts causes dust evaporation and a subsequent fallback. This failed radiatively accelerated dusty outflow is expected to represent the material forming low ionization lines. In this paper we formulate simple analytical equations to describe the cloud motion, including the evaporation phase. The model is fully described just by the basic parameters of black hole mass, accretion rate, black hole spin, and viewing angle. We study how the spectral line generic profiles correspond to this dynamic. We show that the virial factor calculated from our model strongly depends on the black hole mass in the case of enhanced dust opacity, and thus it then correlates with the line width. This could explain why the virial factor measured in galaxies with pseudobulges differs from that obtained from objects with classical bulges, although the trend predicted by the current version of the model is opposite to the observed trend.
电子版国际标准刊号	1538-4357
WOS关键词	BLACK-HOLE MASSES ; ACCRETION DISKS ; EMISSION-LINES ; SEYFERT-1 GALAXIES ; DRIVEN WINDS ; AGB STARS ; REVERBERATION ; SPECTRA ; DISCS ; CONSTRAINTS
WOS研究方向	Astronomy & Astrophysics
语种	英语
WOS记录号	WOS:000410687700002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284716]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wildy, C,Czerny, B,Li, YR,et al. Failed Radiatively Accelerated Dusty Outflow Model of the Broad Line Region in Active Galactic Nuclei. I. Analytical Solution[J]. ASTROPHYSICAL JOURNAL,2017,846(2):154.
APA	Wildy, C.,Czerny, B.,Li, YR.,Hryniewicz, K.,Panda, S.,...&王建民.(2017).Failed Radiatively Accelerated Dusty Outflow Model of the Broad Line Region in Active Galactic Nuclei. I. Analytical Solution.ASTROPHYSICAL JOURNAL,846(2),154.
MLA	Wildy, C,et al."Failed Radiatively Accelerated Dusty Outflow Model of the Broad Line Region in Active Galactic Nuclei. I. Analytical Solution".ASTROPHYSICAL JOURNAL 846.2(2017):154.