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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：物理学院
学科：理论物理
办公地点：物理学院211室
联系方式：lxxu .AT. dlut.edu.cn
Constraints on dark matter annihilation and its equation of state after Planck data
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论文类型：期刊论文
发表时间：2014-12-07
发表刊物：MODERN PHYSICS LETTERS A
收录刊物：SCIE
卷号：29
期号：37
ISSN号：0217-7323
关键字：Dark matter; cosmology; equation of state
摘要：In this paper, the annihilation of dark matter ( DM) f(d) is an element of(0) with nonzero equation of state ( EoS) w(dm) was studied by using the currently available cosmic observations which include geometric and dynamic measurements. The constrained results show they are anti- correlated and are wdm = 0.000390(+ 0.000754) (- 0.000753) and f(d) is an element of(0) = 1.172(+ 0.243) (- 1.172), respectively in 1s regions. With the inclusion of possible annihilation of DM, no significant deviation from CDM model was found in the 1s region.