ITP OpenIR  > 理论物理所科研产出  > SCI论文
Yang, YP; Yang, GL; Huang, XY; Chen, XL; Lu, T; Zong, HS; Yang, YP (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
Contribution of ultracompact dark matter minihalos to the isotropic radio background
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordPrimordial Black-holes 408 Mhz Sky Universe Fields Probe
AbstractThe ultracompact minihalos could be formed during the earlier epoch of the Universe. The dark matter annihilation within them is very strong due to the steep density profile, rho similar to r(-2.25). The high-energy electrons and positrons from the dark matter annihilation can inverse Compton scatter with the background photons, such as cosmic microwave background photons, to acquire higher energy. On the other hand, the synchrotron radiation can also be produced when they meet the magnetic field. In this paper, we study the signals from the ultracompact minihalos (UCMHs) due to the dark matter annihilation for the radio, x-ray and gamma-ray band. We found that for the radio emission, the UCMHs can provide one kind of source for the radio excess observed by ARCADE 2. But the x-ray signals due to the inverse Compton scatter effect or the gamma-ray signals mainly due to the prompt emission from dark matter would exceed the present observations, such as Fermi, COMPTEL, and CHANDRA. We found that the strongest limits on the fraction of UCMHs come from the x-ray observations, and the constraints from the radio data are the weakest. DOI: 10.1103/PhysRevD.87.083519
2013
ISSN1550-7998
Volume87Issue:8Pages:83519
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [10935001, 11075075, 11275097]; Research Fund for the Doctoral Program of Higher Education [2012009111002] ; National Natural Science Foundation of China [10935001, 11075075, 11275097]; Research Fund for the Doctoral Program of Higher Education [2012009111002] ; National Natural Science Foundation of China [10935001, 11075075, 11275097]; Research Fund for the Doctoral Program of Higher Education [2012009111002] ; National Natural Science Foundation of China [10935001, 11075075, 11275097]; Research Fund for the Doctoral Program of Higher Education [2012009111002]
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Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15379
Collection理论物理所科研产出_SCI论文
Corresponding AuthorYang, YP (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
Recommended Citation
GB/T 7714
Yang, YP,Yang, GL,Huang, XY,et al. Contribution of ultracompact dark matter minihalos to the isotropic radio background[J]. PHYSICAL REVIEW D,2013,87(8):83519.
APA Yang, YP.,Yang, GL.,Huang, XY.,Chen, XL.,Lu, T.,...&Yang, YP .(2013).Contribution of ultracompact dark matter minihalos to the isotropic radio background.PHYSICAL REVIEW D,87(8),83519.
MLA Yang, YP,et al."Contribution of ultracompact dark matter minihalos to the isotropic radio background".PHYSICAL REVIEW D 87.8(2013):83519.
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