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New constraints on primordial minihalo abundance using cosmic microwave background observations
Yang, Yupeng1,2,3; Huang, Xiaoyuan3; Chen, Xuelei3; Zong, Hongshi1,2
2011-08-08
发表期刊PHYSICAL REVIEW D
卷号84期号:4
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.
DOI10.1103/PhysRevD.84.043506
收录类别SCI
语种英语
WOS记录号WOS:000293620100002
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7847
专题星系宇宙学研究部
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
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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).
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