中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 近代物理研究所
  3. 中国科学院近代物理研究所
Absence of a fundamental acceleration scale in galaxies

文献类型：期刊论文

作者Rodrigues, Davi C.1,2; Marra, Valerio1,2; del Popolo, Antonino3,4,5; Davari, Zahra6
刊名NATURE ASTRONOMY
出版日期2018-08-01
卷号2页码:668-672
ISSN号2397-3366
DOI10.1038/s41550-018-0498-9
英文摘要Dark matter is currently one of the main mysteries of the Universe. There is much strong indirect evidence that supports its existence, but there is yet no sign of a direct detection(1-3). Moreover, at the scale of galaxies, there is tension between the theoretically expected dark matter distribution and its indirectly observed distribution(4-7). Therefore, phenomena associated with dark matter have a chance of serving as a window towards new physics. The radial acceleration relation(8,9) confirms that a non-trivial acceleration scale a(0) can be found from the internal dynamics of several galaxies. The existence of such a scale is not obvious as far as the standard cosmological model is concerned(10,11), and it has been interpreted as a possible sign of modified gravity(12,13). Here, we consider 193 high-quality disk galaxies and, using Bayesian inference, show that the probability of existence of a fundamental acceleration is essentially O: the null hypothesis is rejected at more than 10 sigma. We conclude that a(0) is of emergent nature. In particular, the modified Newtonian dynamics theory(14-17)-a well-known alternative to dark matter based on the existence of a fundamental acceleration scale-or any other theory that behaves like it at galactic scales, is ruled out as a fundamental theory for galaxies at more than 10 sigma.
WOS关键词MODIFIED NEWTONIAN DYNAMICS ; DARK-MATTER HALOES ; MASS MODELS ; LAMBDA-CDM ; MOND ; CLUSTERS ; THINGS
资助项目CNPq ; FAPES ; Chinese Academy of Sciences ; President's International Fellowship Initiative[2017 VMA0044] ; Ministry of Science, Research and Technology of Iran
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000440524400024
出版者NATURE PUBLISHING GROUP
资助机构CNPq ; FAPES ; Chinese Academy of Sciences ; President's International Fellowship Initiative ; Ministry of Science, Research and Technology of Iran
源URL[http://119.78.100.186/handle/113462/59142]  
专题中国科学院近代物理研究所
作者单位1.Univ Fed Espirito Santo, Ctr Astrophys & Cosmol, CCE, Vitoria, Brazil
2.Univ Fed Espirito Santo, Dept Phys, CCE, Vitoria, Brazil
3.Univ Catania, Dipartimento Fis & Astron, Catania, Italy
4.Chinese Acad Sci, Inst Modern Phys, Lanzhou, Gansu, Peoples R China
5.INFN, Sez Catania, Catania, Italy
6.Bu Ali Sina Univ, Dept Phys, Hamadan, Iran
推荐引用方式
GB/T 7714		 Rodrigues, Davi C.,Marra, Valerio,del Popolo, Antonino,et al. Absence of a fundamental acceleration scale in galaxies[J]. NATURE ASTRONOMY,2018,2:668-672.
APA Rodrigues, Davi C.,Marra, Valerio,del Popolo, Antonino,&Davari, Zahra.(2018).Absence of a fundamental acceleration scale in galaxies.NATURE ASTRONOMY,2,668-672.
MLA Rodrigues, Davi C.,et al."Absence of a fundamental acceleration scale in galaxies".NATURE ASTRONOMY 2(2018):668-672.

入库方式： OAI收割

来源：近代物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。