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The afterglows of ultraluminous quasars
Wang JM(王建民); Wang, JM; Yuan, YF; Ho, LC
2005
发表期刊ASTROPHYSICAL JOURNAL
卷号625期号:1页码:L5-L8
通讯作者Chinese Acad Sci, Inst High Energy Phys, High Energy Astrophys Lab, Beijing 100039, Peoples R China ; Univ Sci & Technol China, Ctr Astrophys, Anhua 230026, Peoples R China ; Carnegie Inst Washington, Pasadena, CA 91101 USA
摘要Quasars represent a brief phase in the life cycle of most massive galaxies, but the evolutionary connection between central black holes and their host galaxies remains unclear. While quasars are active and shining brighter than the Compton-limit luminosity, their radiation heats the surrounding medium to the Compton temperature, forming Compton spheres extending to the Stromgren radius of Fe26+/He2+. After the quasars shut off, their "afterglow" can be detected through three signatures: (1) an extended X-ray envelope, with a characteristic temperature of ∼ 3 x 10(7) (2) Lyα and Lyβ lines and the K edge of Fe26+, and (3) nebulosity from hydrogen and helium recombination emission lines. We discuss the possibility of detecting these signatures using Chandra, the planned X-Ray Evolving Universe Spectroscopy mission, and ground-based optical telescopes. The luminosity and size of quasar afterglows can be used to constrain the lifetime of quasars.
文章类型Article
关键词black hole physics cosmology : theory galaxies : formation quasars : general
学科领域Astronomy & Astrophysics
DOI10.1086/430778
研究领域[WOS]Astronomy & Astrophysics
URL查看原文
语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000229047200002
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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/311005/240281
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,Wang, JM,Yuan, YF,et al. The afterglows of ultraluminous quasars[J]. ASTROPHYSICAL JOURNAL,2005,625(1):L5-L8.
APA 王建民,Wang, JM,Yuan, YF,&Ho, LC.(2005).The afterglows of ultraluminous quasars.ASTROPHYSICAL JOURNAL,625(1),L5-L8.
MLA 王建民,et al."The afterglows of ultraluminous quasars".ASTROPHYSICAL JOURNAL 625.1(2005):L5-L8.
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