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	Probing the Time Variation of the Effective Newton's Constant with Optimal Redshift Weights
	Li, Jian1,2; Zhao, Gong-Bo1,3,4
刊名	ASTROPHYSICAL JOURNAL
	2019-05-20
卷号	877期号:1页码:7
关键词	cosmological parameters cosmology: theory dark energy distance scale large-scale structure of universe
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab16eb
英文摘要	We propose a new method for probing the time variation of the effective Newton's constant G(eff), based on the optimal redshift weighting scheme, and demonstrate the efficacy using the DESI galaxy spectroscopic survey. We find that with the optimal redshift weights, the evolution of G(eff) (z) can be significantly better measured: the uncertainty of G(eff )(z) can be reduced by a factor of 2.2 similar to 12.8 using the DESI Bright Galaxy Survey sample at z less than or similar to 0.45, and by a factor of 1.3 similar to 4.4 using the DESI Emission Line Galaxies sample covering 0.65 less than or similar to z less than or similar to 1.65.
资助项目	National Key Basic Research and Development Program of China[2018YFA0404503] ; National Basic Research Program of China (973 Program)[2015CB857004] ; NSFC[11720101004] ; NSFC[11673025] ; NSFC[11711530207] ; University of Portsmouth
WOS关键词	OSCILLATION SPECTROSCOPIC SURVEY ; BARYON ACOUSTIC-OSCILLATIONS ; DR14 QUASAR SAMPLE ; STRUCTURE GROWTH ; EXPANSION RATE ; TOMOGRAPHIC MEASUREMENT ; GALAXIES ; COSMOLOGY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000468632600008
资助机构	National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Basic Research Program of China (973 Program) ; National Basic Research Program of China (973 Program) ; NSFC ; NSFC ; University of Portsmouth ; University of Portsmouth ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Basic Research Program of China (973 Program) ; National Basic Research Program of China (973 Program) ; NSFC ; NSFC ; University of Portsmouth ; University of Portsmouth ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Basic Research Program of China (973 Program) ; National Basic Research Program of China (973 Program) ; NSFC ; NSFC ; University of Portsmouth ; University of Portsmouth ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Basic Research Program of China (973 Program) ; National Basic Research Program of China (973 Program) ; NSFC ; NSFC ; University of Portsmouth ; University of Portsmouth
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/26301]
专题	中国科学院国家天文台
通讯作者	Li, Jian
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 4.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England
推荐引用方式 GB/T 7714	Li, Jian,Zhao, Gong-Bo. Probing the Time Variation of the Effective Newton's Constant with Optimal Redshift Weights[J]. ASTROPHYSICAL JOURNAL,2019,877(1):7.
APA	Li, Jian,&Zhao, Gong-Bo.(2019).Probing the Time Variation of the Effective Newton's Constant with Optimal Redshift Weights.ASTROPHYSICAL JOURNAL,877(1),7.
MLA	Li, Jian,et al."Probing the Time Variation of the Effective Newton's Constant with Optimal Redshift Weights".ASTROPHYSICAL JOURNAL 877.1(2019):7.

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