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Yang, Tao; Hu, Bin; Cai, Rong-Gen; Wang, Bin3
New Probe of Gravity: Strongly Lensed Gravitational-wave Multimessenger Approach
Source PublicationASTROPHYSICAL JOURNAL
Language英语
KeywordHUBBLE CONSTANT
AbstractStrong gravitational lensing by galaxies provides us with a unique opportunity to understand the nature of gravity on galactic and extra-galactic scales. In this paper, we propose a new multimessenger approach using data from both the gravitational wave (GW) and the corresponding electromagnetic (EM) counterpart to infer the constraint of the modified gravity (MG) theory denoted by the scale dependent phenomenological parameter. To demonstrate the robustness of this approach, we calculate the time-delay predictions by choosing various values of the phenomenological parameters and then compare them with that from general relativity (GR). For the third generation ground-based GW observatory, with one typical strongly lensed GW+EM event, and assuming that the dominated error from the stellar velocity dispersions is 5%, the GW time-delay data can distinguish an 18% MG effect on a scale of tens of kiloparsecs with a 68% confidence level. Assuming GR and a Singular Isothermal Sphere mass model, there exists a simplified consistency relationship between time-delay and imaging data. This relationship does not require the velocity dispersion measurement, and hence can avoid major uncertainties. By using this relationship, the multimessenger approach is able to distinguish an 8% MG effect. Our results show that the GW multimessenger approach can play an important role in revealing the nature of gravity on galactic and extra-galactic scales.
2019
ISSN0004-637X
Volume880Issue:1Pages:50
Cooperation Status国内
Subject AreaAstronomy & Astrophysics
MOST Discipline CatalogueAstronomy & Astrophysics
DOI10.3847/1538-4357/ab271e
Indexed BySCIE
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27034
CollectionSCI期刊论文
Affiliation1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.Yangzhou Univ, Ctr Gravitat & Cosmol, Yangzhou 225009, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Yang, Tao,Hu, Bin,Cai, Rong-Gen,et al. New Probe of Gravity: Strongly Lensed Gravitational-wave Multimessenger Approach[J]. ASTROPHYSICAL JOURNAL,2019,880(1):50.
APA Yang, Tao,Hu, Bin,Cai, Rong-Gen,&Wang, Bin.(2019).New Probe of Gravity: Strongly Lensed Gravitational-wave Multimessenger Approach.ASTROPHYSICAL JOURNAL,880(1),50.
MLA Yang, Tao,et al."New Probe of Gravity: Strongly Lensed Gravitational-wave Multimessenger Approach".ASTROPHYSICAL JOURNAL 880.1(2019):50.
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