New constraints on primordial minihalo abundance using cosmic microwave background observations
文献类型：期刊论文
| 作者 | Yang, Yupeng1,2,3; Huang, Xiaoyuan3; Chen, Xuelei3; Zong, Hongshi1,2 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2011-08-08 |
| 卷号 | 84期号:4 |
| 英文摘要 | It was proposed that the massive compact halo objects (MCHOs) would be produced during an earlier epoch of cosmology if the density perturbations are between 3 x 10(-4) and 0.3. Then these objects can accrete dark matter particles onto them due to their high density. If the dark matter is in the form of the weakly interacting massive particles, the MCHOs can have a significant effect on the evolution of cosmology due to the dark matter annihilation within them. Using the WMAP-7 years data, we investigated the constraints on the current abundance of MCHOs (f(MCHOs)) formed during the e(+)e(-) annihilation phase transition. We have found that the 2 sigma constraint is f(MCHOs) less than or similar to 10(-4) for dark matter masses in the range between 1 GeV and 1 TeV. |
| 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] | DARK-MATTER ; BLACK-HOLES ; ENERGIES ; SPECTRUM ; UNIVERSE ; PROBE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000293620100002 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/15957]  |
| 专题 | 紫金山天文台_暗物质和空间天文实验室 |
| 作者单位 | 1.Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China 2.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Yupeng,Huang, Xiaoyuan,Chen, Xuelei,et al. New constraints on primordial minihalo abundance using cosmic microwave background observations[J]. PHYSICAL REVIEW D,2011,84(4). |
| APA | Yang, Yupeng,Huang, Xiaoyuan,Chen, Xuelei,&Zong, Hongshi.(2011).New constraints on primordial minihalo abundance using cosmic microwave background observations.PHYSICAL REVIEW D,84(4). |
| MLA | Yang, Yupeng,et al."New constraints on primordial minihalo abundance using cosmic microwave background observations".PHYSICAL REVIEW D 84.4(2011). |
入库方式： OAI收割
来源：紫金山天文台
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