ITP OpenIR  > 理论物理所2013年知识产出
Contribution of ultracompact dark matter minihalos to the isotropic radio background
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.
2013
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号87期号:8页码:83519
摘要The 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
部门归属[Yang, Yupeng; Yang, Guilin; Lu, Tan; Zong, Hongshi] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China; [Yang, Yupeng] Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China; [Huang, Xiaoyuan; Chen, Xuelei] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China; [Lu, Tan] Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China; [Yang, Yupeng; Yang, Guilin; Lu, Tan; Zong, Hongshi] Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China; [Zong, Hongshi] Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
关键词Primordial Black-holes 408 Mhz Sky Universe Fields Probe
学科领域Physics
资助者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] ; National Natural Science Foundation of China [10935001, 11075075, 11275097]; Research Fund for the Doctoral Program of Higher Education [2012009111002]
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收录类别SCI
语种英语
资助者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] ; National Natural Science Foundation of China [10935001, 11075075, 11275097]; Research Fund for the Doctoral Program of Higher Education [2012009111002]
WOS记录号WOS:000317866900001
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15379
专题理论物理所2013年知识产出
通讯作者Yang, YP (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
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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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