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arXiv 1801.03062astro-ph.CO
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SDSS-IV扩展重子振荡谱学巡天DR14类星体样品的成团:由红移0.8和2.2之间的各向异性关联函数测量结构增长率

The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measurement of the growth rate of structure from the anisotropic correlation function between redshift 0.8 and 2.2

Pauline Zarrouk, Etienne Burtin, Hector Gil-Marin, Ashley J. Ross, Rita Tojeiro, Isabelle Paris, Kyle S. Dawson, Adam D. Myers, Will J. Percival, Chia-Hsun Chua… 展开作者

Pauline Zarrouk, Etienne Burtin, Hector Gil-Marin, Ashley J. Ross, Rita Tojeiro, Isabelle Paris, Kyle S. Dawson, Adam D. Myers, Will J. Percival, Chia-Hsun Chuang, Gong-Bo Zhao, Julian Bautista, Johan Comparat, Violeta Gonzalez-Perez, Salman Habib, Katrin Heitmann, Jiamin Hou, Pierre Laurent, Jean-Marc Le Goff, Francisco Prada, Sergio A. Rodriguez-Torres, Graziano Rossi, Rossana Ruggeri, Ariel G. Sanchez, Donald P. Schneider, Jeremy L. Tinker, Yuting Wang, Christophe Yèche, Falk Baumgarten, Joel R. Brownstein, Sylvain de la Torre, Hélion du Mas des Bourboux, Jean-Paul Kneib, Nathalie Palanque-Delabrouille, John Peacock, Patrick Petitjean, Hee-Jong Seo, Cheng Zhao

摘要:

本文利用斯隆数字巡天IV扩展重子振荡光谱巡天的数据Release 14(DR 14),给出了位形空间中类星体的成团测量。这个数据集包括148,659个类星体,分布在红移范围$0.8\leq z \leq 2.2$内,跨度为2112.9平方度。我们使用卷积拉格朗日微扰理论(CLPT)的方法与高斯流(GS)模型的红移空间扭曲的关联函数,并证明其适用性的暗物质晕托管eBOSS类星体示踪剂。在有效红移$z_{\rm eff} = 1.52$处,我们测量了结构$fσ_{8}(z_{\rm eff})= 0.426 \pm 0.077$的线性增长率、膨胀率$H(z_{\rm eff})= 159^{+12}_{-13}(r_{s}^{\rm fid}/r_s){\rm km.s}^{-1}.{\rm Mpc}^{-1}$和角直径距离$D_{A}(z_{\rm eff})=1850^{+90}_{-115}\,(r_s/r_{s}^{\rm fid}){\rm Mpc}$,其中$r_{s}$是重子拖曳历元末端的声视界,$r_{s}^{\rm fid}$是它在基准宇宙学中的值。引用的错误包括系统和统计贡献。距离演化的结果与具有普朗克参数的平坦$Λ$ -冷暗物质($Λ$ -CDM)宇宙学的预测一致,并且$fσ_{8}$的测量将广义相对论(GR)的有效性扩展到更高的红移($z>1$)。研究的宇宙学参数的结果被认为是非常好的协议,提供了明确的证据的互补性和鲁棒性的第一个完整的形状集群测量与eBOSS DR 14类星体样本。

英文摘要:

We present the clustering measurements of quasars in configuration space based on the Data Release 14 (DR14) of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey. This dataset includes 148,659 quasars spread over the redshift range $0.8\leq z \leq 2.2$ and spanning 2112.9 square degrees. We use the Convolution Lagrangian Perturbation Theory (CLPT) approach with a Gaussian Streaming (GS) model for the redshift space distortions of the correlation function and demonstrate its applicability for dark matter halos hosting eBOSS quasar tracers. At the effective redshift $z_{\rm eff} = 1.52$, we measure the linear growth rate of structure $fσ_{8}(z_{\rm eff})= 0.426 \pm 0.077$, the expansion rate $H(z_{\rm eff})= 159^{+12}_{-13}(r_{s}^{\rm fid}/r_s){\rm km.s}^{-1}.{\rm Mpc}^{-1}$, and the angular diameter distance $D_{A}(z_{\rm eff})=1850^{+90}_{-115}\,(r_s/r_{s}^{\rm fid}){\rm Mpc}$, where $r_{s}$ is the sound horizon at the end of the baryon drag epoch and $r_{s}^{\rm fid}$ is its value in the fiducial cosmology. The quoted errors include both systematic and statistical contributions. The results on the evolution of distances are consistent with the predictions of flat $Λ$-Cold Dark Matter ($Λ$-CDM) cosmology with Planck parameters, and the measurement of $fσ_{8}$ extends the validity of General Relativity (GR) to higher redshifts($z>1$) This paper is released with companion papers using the same sample. The results on the cosmological parameters of the studies are found to be in very good agreement, providing clear evidence of the complementarity and of the robustness of the first full-shape clustering measurements with the eBOSS DR14 quasar sample.

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