中国科学院紫金山天文台机构知识库
Advanced  
PMO OpenIR  > 宇宙伽马暴、中子星及相关物理研究团组  > 期刊论文
题名: Constraints on ultracompact minihalos from extragalactic gamma-ray background
作者: Yang, Yupeng1, 2, 3; Feng, Lei1, 3; Huang, Xiaoyuan2; Chen, Xuelei2; Lu Tan(陆埮)3, 4; Zong, Hongshi1, 3
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2011-12-01
期号: 12
关键词: dark matter theory ; gamma ray theory ; cosmological parameters from CMBR
DOI: 10.1088/1475-7516/2011/12/020
文章类型: Article
英文摘要: It has been proposed that ultracompact minihalos (UCMHs) might be formed in earlier epoch. If dark matter consists of Weakly Interacting Massive Particles (WIMPs), UCMHs can be treated as the gamma-ray sources due to dark matter annihilation within them. In this paper, we investigate the contributions of UCMHs formed during three phase transitions (i.e., electroweak symmetry breaking, QCD confinement and e(+)e(-) annihilation) to the extragalactic gamma-ray background. Moreover, we use the Fermi-LAT observation data of the extragalactic gamma-ray background to get the constraints on the current abundance of UCMHs produced during these phase transitions. We also compare these results with those obtained from Cosmic Microwave Background (CMB) observations and find that the constraints from the Fermi-LAT are more stringent than those from CMB.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]: Astronomy & Astrophysics ; Physics
关键词[WOS]: DARK-MATTER ; POWER SPECTRUM ; ABUNDANCE ; ENERGIES ; UNIVERSE ; PROBE
收录类别: SCI
语种: 英语
WOS记录号: WOS:000299199300020
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15965
Appears in Collections:宇宙伽马暴、中子星及相关物理研究团组_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Yang, Yupeng]'s Articles
[Feng, Lei]'s Articles
[Huang, Xiaoyuan]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Yang, Yupeng]‘s Articles
[Feng, Lei]‘s Articles
[Huang, Xiaoyuan]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院紫金山天文台 - Feedback
Powered by CSpace