DISTRIBUTION FUNCTION IN THE CENTER OF THE DARK MATTER HALO
文献类型：期刊论文
| 作者 | Ma, Ding; He, Ping; Ma, D , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China |
| 刊名 | INTERNATIONAL JOURNAL OF MODERN PHYSICS D
 |
| 出版日期 | 2009 |
| 卷号 | 18期号:3页码:477-484 |
| 关键词 | Phase-space Density Collisionless Equilibria Galaxy Clusters Spiral Galaxies Jeans Equation Profiles Universal Systems Models Dependence |
| ISSN号 | 0218-2718 |
| 英文摘要 | N-body simulations of dark matter halos show that the density profiles of the halos behave as rho(r) proportional to r(-alpha(r)), where the density logarithmic slope alpha similar or equal to 1-1.5 in the center and alpha similar or equal to 3-4 in the outer parts of the halos. However, some observations are not in agreement with simulations in the very central region of the halos. The simulations also show that the velocity dispersion anisotropy parameter beta approximate to 0 in the inner part of the halo and the so-called pseudo-phase-space density rho/sigma(3) behaves as a power law in radius r. With these results in mind, we study the distribution function and the pseudo-phase-space density rho/sigma(3) of the center of dark matter halos and find that they are closely related. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000265543800011 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5386]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Ma, D , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Ding,He, Ping,Ma, D , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China. DISTRIBUTION FUNCTION IN THE CENTER OF THE DARK MATTER HALO[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS D,2009,18(3):477-484. |
| APA | Ma, Ding,He, Ping,&Ma, D , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.(2009).DISTRIBUTION FUNCTION IN THE CENTER OF THE DARK MATTER HALO.INTERNATIONAL JOURNAL OF MODERN PHYSICS D,18(3),477-484. |
| MLA | Ma, Ding,et al."DISTRIBUTION FUNCTION IN THE CENTER OF THE DARK MATTER HALO".INTERNATIONAL JOURNAL OF MODERN PHYSICS D 18.3(2009):477-484. |
入库方式： OAI收割
来源：理论物理研究所
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