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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
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2019-06-01
卷号486期号:2页码:2407-2411
DOI10.1093/mnras/stz967
产权排序第1完成单位
收录类别SCI ; EI
关键词gravitational lensing: strong galaxies: elliptical galaxies: structure
摘要

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.

资助项目National Natural Science Foundation of China[11573060] ; National Natural Science Foundation of China[11661161010] ; National Natural Science Foundation of China[U1838116]
项目资助者National Natural Science Foundation of China[11573060, 11661161010, U1838116]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS记录号WOS:000474899400071
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DARK-MATTER ; GENERAL-RELATIVITY ; COSMOLOGY ; EVOLUTION ; DYNAMICS ; PROFILE ; STELLAR
EI入藏号20221611998315
EI主题词Galaxies
EI分类号931.5 Gravitation, Relativity and String Theory
引用统计
被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/20579
专题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
通讯作者Li R(李瑞); Wang JC(王建成)
作者单位1.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
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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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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