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期号:8页码:668-672 |
| ISSN号 | 2397-3366 |
| DOI | 10.1038/s41550-018-0498-9 |
| 通讯作者 | Rodrigues, Davi C.(davi.rodrigues@cosmo-ufes.org) ; Marra, Valerio(marra@cosmo-ufes.org) |
| 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. |
| 收录类别 | SCI |
| WOS关键词 | MODIFIED NEWTONIAN DYNAMICS ; DARK-MATTER HALOES ; MASS MODELS ; LAMBDA-CDM ; MOND ; CLUSTERS ; THINGS |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | NATURE PUBLISHING GROUP |
| WOS记录号 | WOS:000440524400024 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557782 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Rodrigues, Davi C.; Marra, Valerio |
| 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(8):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(8),668-672. |
| MLA | Rodrigues, Davi C.,et al."Absence of a fundamental acceleration scale in galaxies".NATURE ASTRONOMY 2.8(2018):668-672. |
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来源：寒区旱区环境与工程研究所
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