用最新的观测数据限制距离对偶关系  

On testing the distance duality relation with the latest

作　　者：陈骏 CHEN Jun(School of Mechanical Engineering,Optoelectronics and Physics,Huaihua University,Huaihua 418000,Hunan,China;School of Science,Kaili University,Kaili 556011,Guizhou,China)

机构地区：[1]怀化学院机械与光电物理学院,湖南怀化418000 [2]凯里学院理学院,贵州凯里556011

出　　处：《云南大学学报（自然科学版）》2021年第6期1134-1140,共7页Journal of Yunnan University(Natural Sciences Edition)

基　　金：贵州省教育厅科技拔尖人才项目(黔教合KY字[2016]104);国家自然科学基金(11465011,11865018);贵州省2018年度“千”层次人才项目.

摘　　要：用模型无关的方法,选取最新的哈勃参数数据和Union 2.1超新星数据共同限制了距离对偶关系,发现3种参数化因子的最佳拟合值都不为0,但是在1σ置信区间内还是支持距离对偶关系的.然后边缘化了观测限制时超新星数据中哈勃常数取值的影响,限制结果表明,在1σ置信区间内,距离对偶关系与观测数据是吻合的.The distance duality relation has been constrained with the latest Hubble parameter data and the type Ia supernova Union 2.1 data by employing a model independent approach.The best suitable values of the three parameters are not zero,but the distance duality relation is consistent with the observations at the 1σconfidence level.To inspect the influence of the value of Hubble constant,the dimensionless Hubble constant h has been treated as a free parameter,and the results show that the observations favor the distance duality relation at the 1σconfidence level.After the dimensionless Hubble constant h has been marginalized,the results demonstrate that the distance duality relation is consistent with the observed data at the 1σconfidence level.

关 键 词：距离对偶关系 观测限制 最新哈勃参数数据 边缘化 

分 类 号：O412.1[理学—理论物理]