Mass-redshift degeneracy for the gravitational-wave sources in the vicinity of supermassive black holes

doi:10.1093/mnrasl/slz046

CSpace > 应用数学研究所

	Mass-redshift degeneracy for the gravitational-wave sources in the vicinity of supermassive black holes
	Chen, Xian 1,2; Li, Shuo 3,4; Cao, Zhoujian5
	2019-05-01
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
卷号	485 期号:1 页码:L141-L145
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.
关键词	black hole physics gravitational waves methods: analytical stars: kinematics and dynamics galaxies: nuclei
DOI	10.1093/mnrasl/slz046
语种	英语
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
WOS类目	Astronomy & Astrophysics
WOS记录号	WOS:000482695700029
出版者	OXFORD UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/35687
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.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 4.Chinese Acad Sci, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China 5.Chinese Acad Sci, Acad Math & Syst Sci, Inst Appl Math, Beijing 100190, 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.