Jeans analysis in modified gravity
文献类型：期刊论文
| 作者 | Roshan, Mahmood1; Abbassi, Shahram1,2,3 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2014-08-07 |
| 卷号 | 90期号:4页码:1 |
| 英文摘要 | MOdified Gravity (MOG) is a covariant modification of Einstein's general relativity. This theory is one of the current alternatives to dark matter models. We describe the dynamics of collisionless self-gravitating systems in the context of MOG. By studying the weak field approximation of this theory, we derive the equations governing the dynamics of the self-gravitating systems. More specifically, we consider the Jeans instability for self-gravitating fluid and stellar systems and derive new Jeans mass limit (M) over tilde (J) and wave-number (k) over tilde (J). Furthermore, considering the gravitational instability in star-forming regions, we show that MOG has not a significant difference with general relativity on this astrophysical scale. However, at larger scales, such as intergalactic space, MOG may lead to different galaxy- and structure-formation processes. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 研究领域[WOS] | Astronomy & Astrophysics ; Physics |
| 关键词[WOS] | NONBARYONIC DARK-MATTER ; GALAXY ROTATION CURVES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000339995400004 |
| 源URL | [http://119.78.226.72/handle/331011/18184]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Ferdowsi Univ Mashhad, Dept Phys, Mashhad, Iran 2.Inst Res Fundamental Sci IPM, Sch Astron, Tehran, Iran 3.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Roshan, Mahmood,Abbassi, Shahram. Jeans analysis in modified gravity[J]. PHYSICAL REVIEW D,2014,90(4):1. |
| APA | Roshan, Mahmood,&Abbassi, Shahram.(2014).Jeans analysis in modified gravity.PHYSICAL REVIEW D,90(4),1. |
| MLA | Roshan, Mahmood,et al."Jeans analysis in modified gravity".PHYSICAL REVIEW D 90.4(2014):1. |
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来源：上海天文台
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