Test of the Cosmic Transparency with the Baryon Acoustic Oscillation and Type Ia Supernova Data  

作　　者：李合昆 吴普训 余洪伟 

机构地区：[1]Center of Nonlinear Science and Department of Physics,Ningbo University

出　　处：《Chinese Physics Letters》2016年第5期149-151,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11175093,11222545,11435006 and 11375092;the K.C.Wong Magna Fund of Ningbo University

摘　　要：We use the latest baryon acoustic oscillation and Union 2.1 type Ia supernova data to test the cosmic opacity between different redshift regions without assuming any cosmological models. It is found that the universe may be opaque between the redshift regions 0.35 0.44, 0.44 0.57 and 0.6-0.73 since the best fit values of cosmic opacity in these regions are positive, while a transparent universe is favored in the redshift region 0.57-0.63. However, in general, a transparent universe is still consistent with observations at the lo confidence level.We use the latest baryon acoustic oscillation and Union 2.1 type Ia supernova data to test the cosmic opacity between different redshift regions without assuming any cosmological models. It is found that the universe may be opaque between the redshift regions 0.35 0.44, 0.44 0.57 and 0.6-0.73 since the best fit values of cosmic opacity in these regions are positive, while a transparent universe is favored in the redshift region 0.57-0.63. However, in general, a transparent universe is still consistent with observations at the lo confidence level.

关 键 词：of in Test of the Cosmic Transparency with the Baryon Acoustic Oscillation and Type Ia Supernova Data with that is 

分 类 号：P145.3[天文地球—天体物理]