论文标题
完整的SDSS-IV扩展BARYON振荡光谱调查：发光红色星系样品中各向异性空隙 - 糖的相关函数的几何和生长
The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: geometry and growth from the anisotropic void-galaxy correlation function in the luminous red galaxy sample
论文作者
论文摘要
我们使用Sloan Digital Sky调查扩展BARYON振荡光谱调查（EBOSS）数据释放16个发光红色星系（LRG）样本，对配置空间中各向异性红移空间 - 摩尔克斯相关性进行了分析。该样本由红移0.6和1.0之间的LRG组成，结合了baryon振荡光谱调查数据的高红移$ z> 0.6 $尾巴释放12 CMASS样本。我们使用重建方法来撤消银河场中的红移空间失真（RSD）效应，然后再应用流域无效辅助算法以消除空隙选择中的偏见。然后，我们对增长率$fσ_8$和几何距离比$ d_m/d_h $的相关函数的多极矩进行联合拟合，查找$fσ_8（z_ \ mathrm {eff}）= 0.356）在有效的红移$ z_ \ mathrm {eff} = 0.69 $的样品中。后验参数变性与应用于同一数据的星系聚类分析的分析是正交的，并且在$ d_m/d_h $上获得的约束明显更紧密。结合了同一样本的共识星系包和完整形状分析，我们获得了$fσ_8= 0.447 \ pm0.039 $，$ d_m/r_d = 17.48 \ pm0.23 $和$ d_h/r_d/r_d = 20.10 \ pm0.34 $。这些值与$λ$ CDM模型的预测非常吻合，并分别代表了$ 13 \％$，$ 23 \％$和$ 28 \％$的降低，而Galaxy群集的综合结果或总体降低了55 \％的允许参数量的55 \％。
We present an analysis of the anisotropic redshift-space void-galaxy correlation in configuration space using the Sloan Digital Sky Survey extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 16 luminous red galaxy (LRG) sample. This sample consists of LRGs between redshifts 0.6 and 1.0, combined with the high redshift $z>0.6$ tail of the Baryon Oscillation Spectroscopic Survey Data Release 12 CMASS sample. We use a reconstruction method to undo redshift-space distortion (RSD) effects from the galaxy field before applying a watershed void-finding algorithm to remove bias from the void selection. We then perform a joint fit to the multipole moments of the correlation function for the growth rate $fσ_8$ and the geometrical distance ratio $D_M/D_H$, finding $fσ_8(z_\mathrm{eff})=0.356\pm0.079$ and $D_M/D_H(z_\mathrm{eff})=0.868\pm0.017$ at the effective redshift $z_\mathrm{eff}=0.69$ of the sample. The posterior parameter degeneracies are orthogonal to those from galaxy clustering analyses applied to the same data, and the constraint achieved on $D_M/D_H$ is significantly tighter. In combination with the consensus galaxy BAO and full-shape analyses of the same sample, we obtain $fσ_8=0.447\pm0.039$, $D_M/r_d=17.48\pm0.23$ and $D_H/r_d=20.10\pm0.34$. These values are in good agreement with the $Λ$CDM model predictions and represent reductions in the uncertainties of $13\%$, $23\%$ and $28\%$ respectively compared to the combined results from galaxy clustering, or an overall reduction of 55\% in the allowed volume of parameter space.
