Measuring the growth of structure by matching dark matter haloes to galaxies with VIPERS and SDSS

Abstract

We test the history of structure formation from redshift 1 to today by matching galaxies from VIPERS and SDSS with dark matter haloes in the MultiDark SMDPL N-body simulation. We first show that the standard subhalo abundance matching (SHAM) recipe implemented with MultiDark characterizes the clustering of galaxies well both at redshift 0 for SDSS and at redshift 1 for VIPERS. This is an important validation of the SHAM model at high redshift. We then remap the simulation timesteps to test alternative growth histories and infer the growth index $\gamma =0.6\pm 0.3$. This analysis demonstrates the power of using N-body simulations to forward model galaxy surveys for cosmological inference.

Matches published version. Data and code to reproduce the analysis are available at https://github.com/darklight-cosmology/vipers-sham

References in corpus (6)

• A test of the nature of cosmic acceleration using galaxy redshift distortions
• The 6dF Galaxy Velocity Survey: Cosmological constraints from the velocity power spectrum
• How to add massive neutrinos to your $\Lambda$CDM simulation -- extending cosmology rescaling algorithms
• No evidence for modifications of gravity from galaxy motions on cosmological scales
• The VIMOS Public Extragalactic Redshift Survey (VIPERS). Hierarchical scaling and biasing
• Remapping simulated halo catalogues in redshift space

Cited by in corpus (3)

• SHAM through the lens of a hydrodynamical simulation
• A joint 2- and 3-point clustering analysis of the VIPERS PDR2 catalogue at z~1: breaking the degeneracy of cosmological parameters
• Validating the methodology for constraining the linear growth rate from clustering anisotropies