论文标题
哈勃常数的测量：不同的宇宙学探针是否提供不同的值？
Measurement of Hubble Constant: Do Different Cosmological Probes Provide Different Values?
论文作者
论文摘要
哈勃常数（$ h_ {0} $）的不同测量不一致，基于CMB的方法与基于宇宙距离阶梯的方法之间存在张力。来自各种基于距离的方法的测量也不一致。为了加剧问题，通过不同方法校准的相同宇宙学探针（例如IA SNE类型）也提供了$ H_ {0} $的不同值。我们通过从哈勃太空望远镜（HST）获得的已经可用的独特数据比较了各种基于距离的方法。我们的分析基于参数（t检验）以及非参数统计方法，例如Mann-Whitney U检验和Kolmogorov-Smirnov检验。我们的结果表明，不同的方法提供了$ H_0 $的不同值，并且差异具有统计学意义。校准中的偏见不会解释这些差异，因为数据是从具有共同校准方案的单个望远镜中获取的。来自不同探针的距离测量的经验关系的未知物理效应或问题可能引起这些差异。
Different measurements of the Hubble constant ($H_{0}$) are not consistent and a tension between the CMB based methods and cosmic distance ladder based methods has been observed. Measurements from various distance based methods are also inconsistent. To aggravate the problem, same cosmological probe (Type Ia SNe for instance) calibrated through different methods also provide different value of $H_{0}$. We compare various distance ladder based methods through the already available unique data obtained from Hubble Space Telescope (HST). Our analysis is based on parametric (T-test) as well as non-parametric statistical methods such as the Mann-Whitney U test and Kolmogorov-Smirnov test. Our results show that different methods provide different values of $H_0$ and the differences are statistically significant. The biases in the calibration would not account for these differences as the data has been taken from a single telescope with common calibration scheme. The unknown physical effects or issues with the empirical relations of distance measurement from different probes could give rise to these differences.
