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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
2000
发表期刊ASTROPHYSICAL JOURNAL
卷号541期号:2页码:L41-L44
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
文章类型Article
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.
关键词accretion, accretion disks galaxies : jets galaxies : nuclei
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
DOI10.1086/312896
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000089825400003
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240272
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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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.
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