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题名: Neutrino signals from ultracompact minihalos and constraints on the primordial curvature perturbation
作者: Yang, YP ;  Yang, GL ;  Zong, HS
刊名: PHYSICAL REVIEW D
出版日期: 2013
卷号: 87, 期号:10, 页码:103525
关键词: DARK-MATTER ;  POWER SPECTRUM ;  PROBE ;  UNIVERSE ;  TELESCOPE ;  ABUNDANCE
学科分类: Physics
通讯作者: Yang, YP (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
部门归属: [Yang, Yupeng; Yang, Guilin; Zong, Hongshi] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China; [Yang, Yupeng] Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China; [Yang, Yupeng; Yang, Guilin; Zong, Hongshi] Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China; [Zong, Hongshi] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: Compared with that of standard dark matter halos, the density profile of the recently proposed new kind of dark matter structure named ultracompact minihalos (UCMHs) is steeper and its formation time is earlier. If the dark matter is composed of weakly interactive massive particles, the potential signals, e. g., neutrinos, from UCMHs due to dark matter annihilation would be detected by IceCube/DeepCore or other detectors and such signals would have a very useful complementarity of gamma-ray observations. On the other hand, the formation of UCMHs is related to primordial curvature perturbations on the smaller scales. So constraints on the abundance of UCMHs can be used to give a limit on the perturbations on these scales. In previous works in the literature, the authors focused on the gamma-ray signals from UCMHs due to dark matter annihilation. In this work, we investigate the neutrino signals from nearby UCMHs. Although no excess of neutrino signals from dark matter annihilation has been observed, the constraints on the abundance of UCMHs can be obtained and these constraints can be translated into the limit on the primordial curvature perturbations on small scales.
资助者: National Natural Science Foundation of China [10935001, 11275097, 11075075]; Research Fund for the Doctoral Program of Higher Education [2012009111002]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000319656400006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15358
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Yang, YP,Yang, GL,Zong, HS. Neutrino signals from ultracompact minihalos and constraints on the primordial curvature perturbation[J]. PHYSICAL REVIEW D,2013,87(10):103525.
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