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The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic correlation function between redshifts 0.6 and 1 | | Julian E. Bautista
; Romain Paviot
; Mariana Vargas Magaña
; Sylvain de la Torre
; Sebastien Fromenteau
; Hector Gil-Marín
; Ashley J. Ross
; Etienne Burtin
; Kyle S.Dawson
; Jiamin Hou
; Jean-Paul Kneib
; Arnaud de Mattia
; Will J. Percival
; Graziano Rossi
; Rita Tojeiro
; Cheng Zhao
; Gong-Bo Zhao
; Shadab Alam
; Joel Brownstein
; Michael J. Chapman
; Peter D. Choi
; Chia-Hsun Chuang
; Stéphanie Escoffier
; Axel de la Macorra
; Hélion du Mas des Bourboux
; Faizan G. Mohammad
; Jeongin Moon
; Eva-Maria Müller
; Seshadri Nadathur
; Jeffrey A.Newman
; Donald Schneider
; Hee-Jong Seo
; Yuting Wang
; | | Date: |
17 Jul 2020 | | Abstract: | We present the cosmological analysis of the configuration-space anisotropic
clustering in the completed Sloan Digital Sky Survey IV (SDSS-IV) extended
Baryon Oscillation Spectroscopic Survey (eBOSS) DR16 galaxy sample. This sample
consists of luminous red galaxies (LRGs) spanning the redshift range $0.6 < z <
1$, at an effective redshift of $z_{
m eff}=0.698$. It combines 174 816 eBOSS
LRGs and 202 642 BOSS CMASS galaxies. We extract and model the baryon acoustic
oscillations (BAO) and redshift-space distortions (RSD) features from the
galaxy two-point correlation function to infer geometrical and dynamical
cosmological constraints. The adopted methodology is extensively tested on a
set of realistic simulations. The correlations between the inferred parameters
from the BAO and full-shape correlation function analyses are estimated. This
allows us to derive joint constraints on the three cosmological parameter
combinations: $D_M(z)/r_d$, $D_H(z)/r_d$ and $fsigma_8(z)$, where $D_M$ is the
comoving angular diameter distance, $D_H$ is Hubble distance, $r_d$ is the
comoving BAO scale, $f$ is the linear growth rate of structure, and $sigma_8$
is the amplitude of linear matter perturbations. After combining the results
with those from the parallel power spectrum analysis of Gil-Marin et al. 2020,
we obtain the constraints: $D_M/r_d = 17.65 pm 0.30$, $D_H/r_d = 19.77 pm
0.47$, $fsigma_8 = 0.473 pm 0.044$. These measurements are consistent with a
flat $Lambda$CDM model with standard gravity. | | Source: | arXiv, 2007.8993 | | Services: | Forum | Review | PDF | Favorites | |
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