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题名: The abundance of new kind of dark-matter structures
作者: Yang, Yupeng1, 2; Chen, Xuelei3; Lu Tan(陆埮)1, 2, 4; Zong, Hongshi1, 2
刊名: EUROPEAN PHYSICAL JOURNAL PLUS
出版日期: 2011-12-01
卷号: 126, 期号:12
DOI: 10.1140/epjp/i2011-11123-8
文章类型: Article
英文摘要: A new kind of dark-matter structures, ultracompact minihalos (UCMHs) was proposed recently. They would be formed during the radiation-dominated epoch if large density perturbations are present. Moreover, if the dark matter is made up of weakly interacting massive particles, the UCMHs can have effect on cosmological evolution because of the high density and dark-matter annihilation within them. In this paper, one new parameter is introduced to consider the contributions of UCMHs due to the dark-matter annihilation to the evolution of cosmology, and we use the current and future CMB observations to obtain the constraint on the new parameter and then the abundance of UCMHs. The final results are applicable for a wider range of dark-matter parameters.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
关键词[WOS]: CONSTRAINTS ; SPECTRUM ; PROBE
收录类别: SCI
语种: 英语
WOS记录号: WOS:000300244400010
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15977
Appears in Collections:陆埮_期刊论文

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作者单位: 1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
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