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ON THE EVOLUTION OF HIGH-REDSHIFT ACTIVE GALACTIC NUCLEI
Mao JR(毛基荣)1,2,3; Kim, Minsun3; Mao, JR
发表期刊ASTROPHYSICAL JOURNAL
2016-09-10
卷号828期号:2
DOI10.3847/0004-637X/828/2/96
产权排序第1完成单位
收录类别SCI
关键词Black Hole Physics Cosmology: Theory Galaxies: Active Galaxies: Evolution Quasars: General Surveys
摘要We build a simple physical model to study the high-redshift active galactic nucleus (AGN) evolution within the coevolution framework of central black holes (BHs) and their host galaxies. The correlation between the circular velocity of a dark halo V-c and the velocity dispersion of a galaxy sigma is used to link the dark matter halo mass and BH mass. The dark matter halo mass function is converted to the BH mass function for any given redshift. The high-redshift optical AGN luminosity functions (LFs) are constructed. At z similar to 4, the flattening feature is not shown at the faint end of the optical AGN LF. This is consistent with observational results. If the optical AGN LF at z similar to 6 can be reproduced in the case in which central BHs have the Eddington-limited accretion, it is possible for the AGN lifetime to have a small value of 2 x 10(5) years. The X-ray AGN LFs and X-ray AGN number counts are also calculated at 2.0 < z < 5.0 and z > 3, respectively, using the same parameters adopted in the calculation for the optical AGN LF at z similar to 4. It is estimated that about 30 AGNs per deg(2) at z > 6 can be detected with a flux limit of 3 x 10(-17) erg cm(-2) s(-1) in the 0.5-2 keV band. Additionally, the cosmic reionization is also investigated. The ultraviolet photons emitted from the high-redshift AGNs mainly contribute to the cosmic reionization, and the central BHs of the high-redshift AGNs have a mass range of 10(6)-10(8)M(circle dot). We also discuss some uncertainties in both the AGN LFs and AGN number counts originating from the M-BH-sigma relation, Eddington ratio, AGN lifetime, and X-ray attenuation in our model.
项目资助者Hundred Talent Program of Chinese Academy of Sciences ; Major Project Program of Chinese Academy of Sciences(KJZD-EW-M06) ; Introducing Oversea Talent Plan of Yunnan Province ; Basic Science Research Program through the National Research Foundation (NRF) of Korea - Ministry of Education, Science and Technology(2012-0001787)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000384237800002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SUPERMASSIVE BLACK-HOLES ; X-RAY LUMINOSITY ; M-BH-SIGMA ; DEEP FIELD-SOUTH ; SIMILAR-TO 4 ; STAR-FORMING GALAXIES ; QUASI-STELLAR OBJECTS ; LYMAN BREAK GALAXIES ; COSMIC REIONIZATION ; FAINT END
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9724
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Mao, JR
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, Yunnan Province, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China
3.Korea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon 305-348, Korea
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Mao JR,Kim, Minsun,Mao, JR. ON THE EVOLUTION OF HIGH-REDSHIFT ACTIVE GALACTIC NUCLEI[J]. ASTROPHYSICAL JOURNAL,2016,828(2).
APA Mao JR,Kim, Minsun,&Mao, JR.(2016).ON THE EVOLUTION OF HIGH-REDSHIFT ACTIVE GALACTIC NUCLEI.ASTROPHYSICAL JOURNAL,828(2).
MLA Mao JR,et al."ON THE EVOLUTION OF HIGH-REDSHIFT ACTIVE GALACTIC NUCLEI".ASTROPHYSICAL JOURNAL 828.2(2016).
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