Observational constraints on Rastall gravity from rotation curves of low surface brightness galaxies

doi:10.1088/1674-1137/44/8/085104

	Observational constraints on Rastall gravity from rotation curves of low surface brightness galaxies
	Tang, Meirong 1,2,3,5; Xu, Zhaoyi 4; Wang JC(王建成)1,2,3,5
刊名	CHINESE PHYSICS C
	2020-08-01
卷号	44 期号:8 页码:8
关键词	Rastall gravity energy condition LSB galaxies
ISSN号	1674-1137
DOI	10.1088/1674-1137/44/8/085104
产权排序	第1完成单位
文献子类	Article
英文摘要	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.
学科主题	天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
URL标识	查看原文
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
资助项目	National 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]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000557439000001
资助机构	National Natural Science Foundation of China[11503078, 11573060, 11847310, 11661161010]
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/23632]
专题	云南天文台_高能天体物理研究组
通讯作者	Tang, Meirong
作者单位	1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China 4.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China
推荐引用方式 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.