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观测数据对宇宙透明度的限制 被引量:2

On constraints on the cosmic transparency with the observational data
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摘要 用Union2.1超新星观测数据和哈勃参数观测数据限制了宇宙的总体透明度,最佳拟合值支持不完全透明的宇宙,但是在2σ误差范围内并不排除完全透明的宇宙.然后限制了不同红移位置的宇宙透明度,最佳拟合值表明随着红移的变化宇宙透明度也变化,并非处处都是均匀的. In the paper, the cosmic transparency has been constrained with the Union2.1 data and the Hub- ble parameter data, the best fit results of the cosmic transparency are consistent with a opaque universe, but a transparent universe is consistent with observations at the 2σ confidence level.And then ,we have constrained the cosmic transparency with different redshift, the best-fit cosmic opacity oscillates between zero and some nonzero values, which is not always uniform.
出处 《云南大学学报(自然科学版)》 CAS CSCD 北大核心 2017年第3期390-394,共5页 Journal of Yunnan University(Natural Sciences Edition)
基金 国家自然科学基金(11465011) 贵州省自然科学基金(黔科合J字[2014]2150) 2016年"西部之光"访问学者项目 贵州省教育厅科技拔尖人才项目(黔教合KY字[2016]104) 凯里学院博士教师专项课题(BS201326)
关键词 宇宙透明度 观测限制 距离对偶关系 红移 the cosmic transparency observational constraints the distance duality relation redshift
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