Blob ejection from advection-dominated accretion flow: Observational consequences

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	Blob ejection from advection-dominated accretion flow: Observational consequences
	Wang JM(王建民); Wu M(吴枚); Wang, JM; Yuan, YF; Wu, M; Kusunose, M
刊名	ASTROPHYSICAL JOURNAL
	2000
卷号	541 期号:2 页码:L41-L44
关键词	accretion, accretion disks galaxies : jets galaxies : nuclei
通讯作者	Chinese Acad Sci, Lab Cosm Ray & High Energy Astrophys, Inst High Energy Phys, Beijing 100039, Peoples R China ; Chinese Acad Sci, PKU, Beijing Astrophys Ctr, Beijing 100871, Peoples R China ; Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China ; Chinese Acad Sci, Natl Astron Observ, Beijing 100864, Peoples R China ; Kwansei Gakuin Univ, Dept Phys, Sch Sci, Nishinomiya, Hyogo 6628501, Japan
英文摘要	There is increasing evidence for the presence of an optically thin advection-dominated accretion flow (ADAF) in low-luminosity active galactic nuclei and radio-loud quasars. The present Letter is devoted to exploring the fate of a blob ejected from an ADAF and to discussing its observational consequences. It is inevitable for the ejected blob to drastically expand into its surroundings. Consequently, it is expected that a group of relativistic electrons will be accelerated, which may lead to nonthermal flares since a strong shock will be formed by the interaction between the blob and its surroundings. Then the blob cools down efficiently, leading to the appearance of recombination lines about 10(5) s after its ejection from an ADAF. We apply this model to NGC 4258 for some observational prediction and to PKS 2149-306 for the explanation of observational evidence. Future simultaneous observations of recombination X-ray lines and continuum emission are strongly desired for testing the present model.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
原文出处	SCI
语种	英语
WOS记录号	WOS:000089825400003
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/240272]
专题	高能物理研究所_粒子天体物理中心高能物理研究所_多学科研究中心
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	Wang JM,Wu M,Wang, JM,et al. Blob ejection from advection-dominated accretion flow: Observational consequences[J]. ASTROPHYSICAL JOURNAL,2000,541(2):L41-L44.
APA	王建民,吴枚,Wang, JM,Yuan, YF,Wu, M,&Kusunose, M.(2000).Blob ejection from advection-dominated accretion flow: Observational consequences.ASTROPHYSICAL JOURNAL,541(2),L41-L44.
MLA	王建民,et al."Blob ejection from advection-dominated accretion flow: Observational consequences".ASTROPHYSICAL JOURNAL 541.2(2000):L41-L44.