中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
HIGH-z QUASARS IN THE R-h = ct UNIVERSE

文献类型:期刊论文

作者Melia, Fulvio1,2,3
刊名ASTROPHYSICAL JOURNAL
出版日期2013-02-10
卷号764期号:1页码:1-5
关键词cosmology: observations cosmology: theory dark ages, reionization, first stars early universe quasars: general large-scale structure of universe
ISSN号0004-637X
通讯作者Melia, F (reprint author), Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China. Email: melia@as.arizona.edu
英文摘要One cannot understand the early appearance of 10(9)M(circle dot) supermassive black holes without invoking anomalously high accretion rates or the creation of exotically massive seeds, neither of which is seen in the local universe. Recent observations have compounded this problem by demonstrating that most, if not all, of the high-z quasars appear to be accreting at the Eddington limit. In the context of Lambda CDM, the only viable alternative now appears to be the assemblage of supermassive black holes via mergers, as long as the seeds started forming at redshifts > 40, but ceased being created by z similar to 20-30. In this paper, we show that, whereas the high-z quasars may be difficult to explain within the framework of the standard model, they can instead be interpreted much more sensibly in the context of the R-h = ct universe. In this cosmology, 5-20 M-circle dot seeds produced after the onset of re-ionization (at z less than or similar to 15) could have easily grown to M greater than or similar to 10(9) M-circle dot by z greater than or similar to 6, merely by accreting at the standard Eddington rate.
WOS标题词Science & Technology ; Physical Sciences
学科主题Astronomy & Astrophysics
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]SUPERMASSIVE BLACK-HOLES ; SIMILAR-TO 6 ; NEAR-INFRARED SPECTROSCOPY ; ACTIVE GALACTIC NUCLEI ; Z-SIMILAR-TO-6 QUASARS ; REDSHIFT QUASARS ; EVOLUTION ; GALAXIES ; GROWTH ; LUMINOSITY
收录类别SCI
语种英语
WOS记录号WOS:000314335200072
公开日期2014-01-08
源URL[http://libir.pmo.ac.cn/handle/332002/9756]  
专题紫金山天文台_暗物质和空间天文实验室
作者单位1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Arizona, Dept Phys, Program Appl Math, Tucson, AZ 85721 USA
3.Univ Arizona, Dept Astron, Tucson, AZ 85721 USA
推荐引用方式
GB/T 7714
Melia, Fulvio. HIGH-z QUASARS IN THE R-h = ct UNIVERSE[J]. ASTROPHYSICAL JOURNAL,2013,764(1):1-5.
APA Melia, Fulvio.(2013).HIGH-z QUASARS IN THE R-h = ct UNIVERSE.ASTROPHYSICAL JOURNAL,764(1),1-5.
MLA Melia, Fulvio."HIGH-z QUASARS IN THE R-h = ct UNIVERSE".ASTROPHYSICAL JOURNAL 764.1(2013):1-5.

入库方式: OAI收割

来源:紫金山天文台

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。