论文标题
SDSS-IV扩展BARYON振荡光谱调查DR16发光红色星系和发射线样品的聚类：宇宙距离和结构生长测量，使用多个配置空间中的示踪剂
The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR16 luminous red galaxy and emission line galaxy samples: cosmic distance and structure growth measurements using multiple tracers in configuration space
论文作者
论文摘要
我们使用完整的Sloan数字天空调查IV（SDSS-IV）进行多个跟踪分析，扩展了BARYON回旋光谱调查（EBOSS）DR16发光红色星系（LRG）和DR16发射线星系（ELG）在配置空间中的样品，并在$ 3之间=0。 \ pm 0.085 $（$ \ sim25 $精度）仅来自交叉样本。我们使用$ z {\ rm eff} = 0.77 $的单个有效的红移对巴属声振荡（BAO）和红移空间扭曲（RSD）参数进行联合测量，并使用自动和交叉交叉授权功能comply and lrg and gime commeter commeter commeter commeter commeter n commeter die; eff})/r_d = 18.85\pm 0.38$, the Hubble distance $D_H(z_{\rm eff})/r_d = 19.64 \pm 0.57$, and $fσ_8(z_{\rm eff}) = 0.432 \pm 0.038$, which is consistent with a $Λ$CDM model at $68\%$ CL.与在LRG样本上的单个跟踪分析相比，优点（FOM）为$α_ {\ perp}，α_{|||} $和$fσ_8$在我们的多轨道分析中提高了1.11 $的$ 1.11 $，尤其是$fσ_8$ 11 $ 11 $11。
We perform a multi-tracer analysis using the complete Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS) DR16 luminous red galaxy (LRG) and the DR16 emission line galaxy (ELG) samples in the configuration space, and successfully detect a cross correlation between the two samples, and find the growth rate to be $fσ_8=0.342 \pm 0.085$ ($\sim25$ per cent accuracy) from the cross sample alone. We perform a joint measurement of the baryonic acoustic oscillation (BAO) and redshift space distortion (RSD) parameters at a single effective redshift of $z_{\rm eff}= 0.77$, using the auto- and cross-correlation functions of the LRG and ELG samples, and find that the comoving angular diameter distance $D_M(z_{\rm eff})/r_d = 18.85\pm 0.38$, the Hubble distance $D_H(z_{\rm eff})/r_d = 19.64 \pm 0.57$, and $fσ_8(z_{\rm eff}) = 0.432 \pm 0.038$, which is consistent with a $Λ$CDM model at $68\%$ CL. Compared to the single-tracer analysis on the LRG sample, the Figure of Merit (FoM) of $α_{\perp}, α_{||}$ and $fσ_8$ is improved by a factor of $1.11$ in our multi-tracer analysis, and in particular, the statistical uncertainty of $fσ_8$ is reduced by $11.6 \%$.
