The VIMOS Public Extragalactic Redshift Survey (VIPERS). Galaxy clustering and redshift-space distortions at z=0.8 in the first data release

TL;DR

This paper analyzes galaxy clustering and redshift-space distortions at z=0.8 using VIPERS data, providing precise measurements of structure growth consistent with standard cosmology, and discusses survey properties and corrections.

Contribution

It presents the first detailed clustering analysis and growth rate measurement at z=0.8 from VIPERS, with improved accuracy and survey correction methods.

Findings

Measured the growth rate of structure at z=0.8 as fσ8=0.47±0.08.

Provided the first detailed clustering properties of galaxies at this redshift.

Confirmed consistency with standard cosmological models based on Einstein gravity.

Abstract

We present in this paper the general real- and redshift-space clustering properties of galaxies as measured in the first data release of the VIPERS survey. VIPERS is a large redshift survey designed to probe the distant Universe and its large-scale structure at 0.5 < z < 1.2. We describe in this analysis the global properties of the sample and discuss the survey completeness and associated corrections. This sample allows us to measure the galaxy clustering with an unprecedented accuracy at these redshifts. From the redshift-space distortions observed in the galaxy clustering pattern we provide a first measurement of the growth rate of structure at z = 0.8: f\sigma_8 = 0.47 +/- 0.08. This is completely consistent with the predictions of standard cosmological models based on Einstein gravity, although this measurement alone does not discriminate between different gravity models.