Neutrino signals from ultracompact minihalos and constraints on the primordial curvature perturbation

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	Yang, YP; Yang, GL; Zong, HS; Yang, YP (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
	Neutrino signals from ultracompact minihalos and constraints on the primordial curvature perturbation
发表期刊	PHYSICAL REVIEW D
语种	英语
关键词	Dark-matter Power Spectrum Probe Universe Telescope Abundance
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.
	2013
ISSN	1550-7998
卷号	87 期号:10 页码:103525
学科领域	Physics
收录类别	SCI
项目资助者	National Natural Science Foundation of China [10935001, 11275097, 11075075]; Research Fund for the Doctoral Program of Higher Education [2012009111002] ; National Natural Science Foundation of China [10935001, 11275097, 11075075]; Research Fund for the Doctoral Program of Higher Education [2012009111002] ; National Natural Science Foundation of China [10935001, 11275097, 11075075]; Research Fund for the Doctoral Program of Higher Education [2012009111002] ; National Natural Science Foundation of China [10935001, 11275097, 11075075]; Research Fund for the Doctoral Program of Higher Education [2012009111002]
引用统计	被引频次：20[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/311006/15358
专题	理论物理所科研产出_SCI论文
通讯作者	Yang, YP (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
推荐引用方式 GB/T 7714	Yang, YP,Yang, GL,Zong, HS,et al. Neutrino signals from ultracompact minihalos and constraints on the primordial curvature perturbation[J]. PHYSICAL REVIEW D,2013,87(10):103525.
APA	Yang, YP,Yang, GL,Zong, HS,&Yang, YP .(2013).Neutrino signals from ultracompact minihalos and constraints on the primordial curvature perturbation.PHYSICAL REVIEW D,87(10),103525.
MLA	Yang, YP,et al."Neutrino signals from ultracompact minihalos and constraints on the primordial curvature perturbation".PHYSICAL REVIEW D 87.10(2013):103525.

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