Mass-redshift degeneracy for the gravitational-wave sources in the vicinity of supermassive black holes
文献类型:期刊论文
作者 | Chen, Xian1,5; Li, Shuo3,4; Cao, Zhoujian2 |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
出版日期 | 2019-05-01 |
卷号 | 485期号:1页码:L141-L145 |
ISSN号 | 0035-8711 |
关键词 | black hole physics gravitational waves methods: analytical stars: kinematics and dynamics galaxies: nuclei |
DOI | 10.1093/mnrasl/slz046 |
英文摘要 | Retrieving the mass of a gravitational-wave (GW) source is a fundamental but difficult problem because the mass is degenerate with redshift. In astronomy, three types of redshift exist, namely cosmological, Doppler, and gravitational redshift, but the latter two are normally too weak to affect the observation. In this Letter, we show that the current astrophysical models allow binary black holes (BBHs) to merge within 10 Schwarzschild radii of a supermassive black hole (SMBH). We find that in this case both the Doppler and gravitational redshift are significant, and in the most extreme condition they could increase the 'apparent' black-hole mass and distance by a factor of 1.9-3.4. We show that such a factor is consistent with the distribution in the distance-mass diagram of the 10 BBHs detected so far by LIGO/Virgo. We also discuss the difficulties of this redshift scenario caused by the low event rate predicted by the current models, as well the potential solutions. |
资助项目 | '985 Project' of Peking University ; NSFC[11873022] ; NSFC[11773059] ; NSFC[11303039] ; NSFC[11622546] ; NSFC[11375260] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[XDB23040100] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[XDB23010200] ; Silk Road Project of the National Astronomical Observatories, CAS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000482695700029 |
源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/35686] |
专题 | 应用数学研究所 |
通讯作者 | Chen, Xian |
作者单位 | 1.Peking Univ, Sch Phys, Astron Dept, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Acad Math & Syst Sci, Inst Appl Math, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 5.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Xian,Li, Shuo,Cao, Zhoujian. Mass-redshift degeneracy for the gravitational-wave sources in the vicinity of supermassive black holes[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,485(1):L141-L145. |
APA | Chen, Xian,Li, Shuo,&Cao, Zhoujian.(2019).Mass-redshift degeneracy for the gravitational-wave sources in the vicinity of supermassive black holes.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,485(1),L141-L145. |
MLA | Chen, Xian,et al."Mass-redshift degeneracy for the gravitational-wave sources in the vicinity of supermassive black holes".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 485.1(2019):L141-L145. |
入库方式: OAI收割
来源:数学与系统科学研究院
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