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Observational constraints on Rastall gravity from rotation curves of low surface brightness galaxies
Tang, Meirong1,3,4,5; Xu, Zhaoyi2; Wang JC(王建成)1,3,4,5
Source PublicationCHINESE PHYSICS C
2020-08-01
Volume44Issue:8Pages:8
DOI10.1088/1674-1137/44/8/085104
Contribution Rank第1完成单位
Indexed BySCI
KeywordRastall gravity energy condition LSB galaxies
Abstract

Rastall gravity is a modification of Einstein's general relativity in which the energy-momentum conservation is not satisfied and depends on the gradient of the Ricci curvature. It is currently in dispute whether Rastall gravity is equivalent to general relativity (GR). In this work, we constrain the theory using the rotation curves of low surface brightness (LSB) spiral galaxies. By fitting the rotation curves of LSB galaxies, we obtain parameter beta of the Rastall gravity. The beta values of LSB galaxies satisfy the weak energy condition (WEC) and strong energy condition (SEC). Combining the beta values of type Ia supernovae and the gravitational lensing of elliptical galaxies on Rastall gravity, we conclude that Rastall gravity may be equivalent to general relativity.

Funding ProjectNational Natural Science Foundation of China[11503078] ; National Natural Science Foundation of China[11573060] ; National Natural Science Foundation of China[11847310] ; National Natural Science Foundation of China[11661161010]
Funding OrganizationNational Natural Science Foundation of China[11503078, 11573060, 11847310, 11661161010]
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
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN1674-1137
URL查看原文
WOS IDWOS:000557439000001
WOS Research AreaPhysics
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/23633
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 AuthorTang, Meirong
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China
2.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
5.University of Chinese Academy of Sciences, Beijing 100049, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Tang, Meirong,Xu, Zhaoyi,Wang JC. Observational constraints on Rastall gravity from rotation curves of low surface brightness galaxies[J]. CHINESE PHYSICS C,2020,44(8):8.
APA Tang, Meirong,Xu, Zhaoyi,&Wang JC.(2020).Observational constraints on Rastall gravity from rotation curves of low surface brightness galaxies.CHINESE PHYSICS C,44(8),8.
MLA Tang, Meirong,et al."Observational constraints on Rastall gravity from rotation curves of low surface brightness galaxies".CHINESE PHYSICS C 44.8(2020):8.
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