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Constraining the Rastall parameters in static space-times with galaxy-scale strong gravitational lensing
Li R(李瑞)1,2,3,4; Wang JC(王建成)1,2,3,4; Xu, Zhaoyi5; Guo, Xiaotong6
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2019-06-01
Volume486Issue:2Pages:2407-2411
DOI10.1093/mnras/stz967
Contribution Rank第1完成单位
Indexed BySCI
Keywordgravitational lensing: strong galaxies: elliptical galaxies: structure
Abstract

Recently, Rastall gravity has undergone a significant surge in popularity. We obtain a power-law total mass-density profile for the inner region (within several effective radius) of early-type galaxies (ETGs) from the space-time structures which are described by the static spherically symmetric solutions of Rastall gravity under the assumption of perfect fluid matter. We find that in the inner region of ETGs, the Rastall dimensionless parameter beta = kappa lambda determines the mass distribution. We then use 118 galaxy-galaxy strong gravitational lensing systems to constrain the Rastall dimensionless parameter beta. We find that the mean value of beta for the total 118 ETGs is beta = 0.163 +/- 0.001(68 per cent CL) with a minor intrinsic scatter of delta = 0.020 +/- 0.001. Our work observationally illustrates the physical meaning of the Rastall dimensionless parameter at the galaxy scale. From the Newtonian approximation of Rastall gravity, we also find that an absolute isothermal mass distribution for ETGs is not allowed in the framework of Rastall gravity.

Funding ProjectNational Natural Science Foundation of China[11573060] ; National Natural Science Foundation of China[11661161010] ; National Natural Science Foundation of China[U1838116]
Funding OrganizationNational Natural Science Foundation of China[11573060, 11661161010, U1838116]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000474899400071
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDARK-MATTER ; GENERAL-RELATIVITY ; COSMOLOGY ; EVOLUTION ; DYNAMICS ; PROFILE ; STELLAR
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/20579
Collection高能天体物理研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorLi R(李瑞); Wang JC(王建成)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
2.University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China
4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
5.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
6.School of Astronomy and Space Science, Nanjing University, Nanjing, Jiangsu, 210093, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li R,Wang JC,Xu, Zhaoyi,et al. Constraining the Rastall parameters in static space-times with galaxy-scale strong gravitational lensing[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,486(2):2407-2411.
APA Li R,Wang JC,Xu, Zhaoyi,&Guo, Xiaotong.(2019).Constraining the Rastall parameters in static space-times with galaxy-scale strong gravitational lensing.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,486(2),2407-2411.
MLA Li R,et al."Constraining the Rastall parameters in static space-times with galaxy-scale strong gravitational lensing".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 486.2(2019):2407-2411.
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