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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
Source PublicationPHYSICAL REVIEW D
Volume84Issue:4
AbstractIt 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 HeadingsScience & Technology ; Physical Sciences
DOI10.1103/PhysRevD.84.043506
WOS KeywordDARK-MATTER ; BLACK-HOLES ; ENERGIES ; SPECTRUM ; UNIVERSE ; PROBE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000293620100002
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15957
Collection暗物质和空间天文实验室
Affiliation1.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
Recommended Citation
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).
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