Probing cosmic opacity with the type Ia supernovae and Hubble parameter
Probing cosmic opacity with the type Ia supernovae and Hubble parameter
复制标题
利用 Ia 型超新星和哈勃参数探测宇宙不透明度
DOI:
10.1140/epjc/s10052-020-8426-4
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发表时间:
2020-09
期刊:
影响因子:
--
通讯作者:
Qihong Huang
中科院分区:
文献类型:
--
作者:
Bing Xu;Kaituo Zhang;Qihong Huang
In this paper, we probe the cosmic opacity with the newest Pantheon type Ia supernovae (SNIa) and the observational Hubble parameterdata based on theCDM andwCDM models with or without spatial curvature. In the analysis, we marginalize the likelihood function of SNIa data over the pertinent nuisance parameter, a combination of the absolute magnitude of SNIaand the Hubble constant, with a flat prior. Two parameterizations of the optical depthassociated to the cosmic absorption, namelyand, are adopted. We find that the results are not sensitive to the fiducial cosmological models, the spatial curvature and parameterizations of. Moreover, the results from the Pantheon data alone are consistent with a transparent universe (). And once theH(z) data is combined,falls within the 68% confidence level (CL) of the best fit when a flatprior or the distance priors are used, while it falls within the 95% CL when a Gaussian distribution prior ofkmis used.
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DOI:
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发表时间:
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期刊:
The Astrophysical Journal
影响因子:
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