The abundance of new kind of dark-matter structures

	The abundance of new kind of dark-matter structures
	Yang, Yupeng 1,2; Chen, Xuelei 3; Lu, Tan1,2,4 ; Zong, Hongshi 1,2
刊名	EUROPEAN PHYSICAL JOURNAL PLUS
	2011-12-01
卷号	126 期号:12
英文摘要	A new kind of dark-matter structures, ultracompact minihalos (UCMHs) was proposed recently. They would be formed during the radiation-dominated epoch if large density perturbations are present. Moreover, if the dark matter is made up of weakly interacting massive particles, the UCMHs can have effect on cosmological evolution because of the high density and dark-matter annihilation within them. In this paper, one new parameter is introduced to consider the contributions of UCMHs due to the dark-matter annihilation to the evolution of cosmology, and we use the current and future CMB observations to obtain the constraint on the new parameter and then the abundance of UCMHs. The final results are applicable for a wider range of dark-matter parameters.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	CONSTRAINTS ; SPECTRUM ; PROBE
收录类别	SCI
语种	英语
WOS记录号	WOS:000300244400010
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/15977]
专题	紫金山天文台_院士文集_陆埮
作者单位	1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 2.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yupeng,Chen, Xuelei,Lu, Tan,et al. The abundance of new kind of dark-matter structures[J]. EUROPEAN PHYSICAL JOURNAL PLUS,2011,126(12).
APA	Yang, Yupeng,Chen, Xuelei,Lu, Tan,&Zong, Hongshi.(2011).The abundance of new kind of dark-matter structures.EUROPEAN PHYSICAL JOURNAL PLUS,126(12).
MLA	Yang, Yupeng,et al."The abundance of new kind of dark-matter structures".EUROPEAN PHYSICAL JOURNAL PLUS 126.12(2011).