Constraining Cosmological Parameters in the FLRW Metric with Lensed GW plus EM Signals

doi:10.3847/1538-4357/ab037e

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	Constraining Cosmological Parameters in the FLRW Metric with Lensed GW plus EM Signals
	Li, Yufeng 2,3; Fan, Xilong 1,4; Gou, Lijun 2,3
刊名	ASTROPHYSICAL JOURNAL
	2019-03-01
卷号	873 期号:1 页码:5
关键词	cosmological parameters gravitational lensing: strong gravitational waves
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab037e
英文摘要	We proposed a model-independent method to constrain cosmological parameters using the Distance Sum Rule of the Friedmann-Lemaitre-Robertson-Walker metric by combining the time delay distances and the comoving distances through a multi-messenger approach. The time delay distances are measured from lensed gravitational wave. (GW) signals together with their corresponding electromagnetic wave. (EM) counterparts, while the comoving distances are obtained from a parameterized fitting approach with independent supernova observations. With a series of simulations based on the Einstein Telescope, Large Synoptic Survey Telescope, and The Dark Energy Survey, we find that only 10 lensed GW+EM systems can achieve the constraining power comparable to and even stronger than 300 lensed quasar systems due to the more precise time delay from lensed GW signals. Specifically, the cosmological parameters can be constrained to k = 0.01(-0.05)(+0.05) and H-0 = 69.7(-0.35)(+0.35) (1 sigma).(5) Our results show that more precise time delay measurements could provide more stringent cosmological parameter values, and lensed GW+EM systems therefore can be applied as a powerful tool in the future precision cosmology.
资助项目	National Program on Key Research and Development Project[2016YFA0400804] ; National Natural Science Foundation of China[11673008] ; National Natural Science Foundation of China[11633001] ; National Natural Science Foundation of China[11333005] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 23040100] ; Strategic Priority Program of the Chinese Academy of Sciences[XDB 23040100] ; Newton International Fellowship Alumni Follow-on Funding
WOS关键词	GRAVITATIONAL-WAVES ; SUPERNOVAE
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000460136100005
资助机构	National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; Newton International Fellowship Alumni Follow-on Funding ; Newton International Fellowship Alumni Follow-on Funding ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; Newton International Fellowship Alumni Follow-on Funding ; Newton International Fellowship Alumni Follow-on Funding ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; Newton International Fellowship Alumni Follow-on Funding ; Newton International Fellowship Alumni Follow-on Funding ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; Newton International Fellowship Alumni Follow-on Funding ; Newton International Fellowship Alumni Follow-on Funding
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/25273]
专题	中国科学院国家天文台
通讯作者	Fan, Xilong
作者单位	1.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China 3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 4.Hubei Univ Educ, Dept Phys & Mech & Elect Engn, Wuhan 430205, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Li, Yufeng,Fan, Xilong,Gou, Lijun. Constraining Cosmological Parameters in the FLRW Metric with Lensed GW plus EM Signals[J]. ASTROPHYSICAL JOURNAL,2019,873(1):5.
APA	Li, Yufeng,Fan, Xilong,&Gou, Lijun.(2019).Constraining Cosmological Parameters in the FLRW Metric with Lensed GW plus EM Signals.ASTROPHYSICAL JOURNAL,873(1),5.
MLA	Li, Yufeng,et al."Constraining Cosmological Parameters in the FLRW Metric with Lensed GW plus EM Signals".ASTROPHYSICAL JOURNAL 873.1(2019):5.