Testing the distance-duality relation with the baryon acoustic oscillations data and type Ia supernovae data  

作　　者：Jun Chen 

机构地区：[1]School of Science,Kaili University,Kaili,Guizhou 556011,China

出　　处：《Communications in Theoretical Physics》2020年第4期71-77,共7页理论物理通讯（英文版）

基　　金：supported by the Foundation of the Guizhou Provincial Education Department of China under Grants No.KY[2016]104;the National Natural Science Foundation of China under Grants Nos.11465011 and 11865018;the Foundation of Guizhou Provincial Science and Technology of China under Grants No.J[2014]2150.

摘　　要：In this letter,the cosmic distance-duality relation has been constrained with a model-independent method by combining the baryon acoustic oscillation(BAO)data and the type Ia supernova(SNe Ia)data.The results show that this relation is consistent with the observational data in the 68.27%error range,except for the instance of Union 2.1 plus BAO with the statistic errors only,where the relation is consistent with the observations in the 95.45%error range.To study the result of the uncertainty of the Hubble constant on the investigation of this relation,we treat the dimensionless Hubble constant h as a free parameter and get that the observational data favors the relation in the 68.27%error range.And then h has been marginalized and the results support that this relation is favored by the observations in the 68.27%error range too.

关 键 词：BARYON ACOUSTIC oscillation the cosmic distance-duality RELATION type Ia supernovae 

分 类 号：P145.3[天文地球—天体物理]