论文标题
重新分析$ H_0 $的最新SH0ES数据：新自由度对哈勃张力的影响
A reanalysis of the latest SH0ES data for $H_0$: Effects of new degrees of freedom on the Hubble tension
论文作者
论文摘要
我们将最近发布的SH0E数据重新分析以确定$ H_0 $。我们专注于测试Cepheid+SNIA样品的均匀性，以及在头孢虫和SNIA建模中存在新的自由度的情况下结果的鲁棒性。因此，我们专注于分析的四个建模参数：SNIA $ M_B $和CEPHEIDS $ M_W $的基准发光度以及两个参数（$ b_w $和$ z_w $）标准化cepheid luminosisition liginesities lige and of EGEN和METALLICITIT。重现SH0ES基线模型结果后，我们允许在给定距离$ d_c $或宇宙时间$ t_c $的任何一个参数的值过渡，从而在分析中增加了单个自由度。当Snia绝对幅度$ m_b $被允许以$ d_c \ simeq 50mpc $（约1.60亿美元的$ ogo）过渡时，哈勃参数的最佳拟合价值从$ h_ {0} = 73.04 \ pm1.04 \ pm1.04 \ pm1.04 \，km \，km \，km \，km \，s^{ - 1}} $ h_0 = 67.32 \ pm 4.64 \，km \，s^{ - 1} \，mpc^{ - 1} $与普朗克值完全一致。 Also, the best fit SnIa absolute magnitude $M_B^>$ for $D>D_c$ drops to the Planck inverse distance ladder value $M_{B}^>=-19.43\pm 0.15$ while the low distance best fit $M_B^<$ parameter remains close to the original distance ladder calibrated value $M_{B}^<=-19.25\pm 0.03$.对于分析的其他三个主要参数（$ b_w $，$ m_w $和$ z_w $），在相同的关键距离$ d_c \ simeq 50 \，mpc $上找到了类似的过渡行为提示（$ b_w $，$ m_w $和$ z_w $），即使在这种情况下，$ h_0 $的最佳拟合值也没有受到显着影响。当分析中包含$ M_B^> $的逆距离梯子约束时，$ h_0 $的不确定性大大减少（$ h_0 = 68.2 \ pm 0.8 \，km \，km \，s^{ - 1}}} \ \，mpc^{ - 1} $ $ m_b $ shne $ podect of ym of y yes the sh0 sage yes the sh0Δ根据AIC和BIC模型选择标准，\ simeq -15 $，$ΔAIC\ simeq -13 $）。
We reanalyze the recently released SH0ES data for the determination of $H_0$. We focus on testing the homogeneity of the Cepheid+SnIa sample and the robustness of the results in the presence of new degrees of freedom in the modeling of Cepheids and SnIa. We thus focus on the four modeling parameters of the analysis: the fiducial luminosity of SnIa $M_B$ and Cepheids $M_W$ and the two parameters ($b_W$ and $Z_W$) standardizing Cepheid luminosities with period and metallicity. After reproducing the SH0ES baseline model results, we allow for a transition of the value of any one of these parameters at a given distance $D_c$ or cosmic time $t_c$ thus adding a single degree of freedom in the analysis. When the SnIa absolute magnitude $M_B$ is allowed to have a transition at $D_c\simeq 50Mpc$ (about $160Myrs$ ago), the best fit value of the Hubble parameter drops from $H_{0}=73.04\pm1.04\,km\,s^{-1}\,Mpc^{-1}$ to $H_0=67.32\pm 4.64\, km\,s^{-1}\,Mpc^{-1}$ in full consistency with the Planck value. Also, the best fit SnIa absolute magnitude $M_B^>$ for $D>D_c$ drops to the Planck inverse distance ladder value $M_{B}^>=-19.43\pm 0.15$ while the low distance best fit $M_B^<$ parameter remains close to the original distance ladder calibrated value $M_{B}^<=-19.25\pm 0.03$. Similar hints for a transition behavior is found for the other three main parameters of the analysis ($b_W$, $M_W$ and $Z_W$) at the same critical distance $D_c\simeq 50\,Mpc$ even though in that case the best fit value of $H_0$ is not significantly affected. When the inverse distance ladder constraint on $M_B^>$ is included in the analysis, the uncertainties for $H_0$ reduce dramatically ($H_0= 68.2\pm 0.8\, km\,s^{-1}\,Mpc^{-1}$) and the $M_B$ transition model is strongly preferred over the baseline SH0ES model ($Δχ^2 \simeq -15$, $ΔAIC \simeq -13$) according to AIC and BIC model selection criteria.
