Cosmological information content in redshift-space power spectrum of SDSS-like galaxies in the quasi-nonlinear regime up to $k=0.3h$Mpc${}^{-1}$

Abstract

Clustering properties and peculiar velocities of halos in large-scale structure carry a wealth of cosmological information over a wide range of scales from linear to nonlinear scales. We use halo catalogs in a suite of high-resolution $N$-body simulations to construct mock catalogs of galaxies that resemble the SDSS-like luminous early-type galaxies at three redshift bins in the range $0.15\le z\le 0.7$. To do this we include 10 nuisance parameters to model variations in halo-galaxy connections for each redshift bin; the halo occupation distribution, and the spatial and velocity distributions of galaxies in the host halos. We evaluate the Fisher information matrix for the redshift-space power spectrum of SDSS-like galaxies using different sets of the mock catalogs that are generated from changes in each of model parameters; cosmological parameters (${\sigma }_8$ and ${\Omega }_{\mathrm{m}}$), the halo-galaxy connection parameters, and the cosmological distances ($D_{\mathrm{A}}$ and $H$ parameters at each redshift bin) for modeling an apparent geometrical distortion of the redshift-space power spectrum (the Alcock-Paczynski effect). We show that combining the monopole and quadrupole power spectra of galaxies allows for accurate estimations of the cosmological parameters and the cosmological distances, even after marginalization over the halo-galaxy parameters, by lifting the parameter degeneracies that are otherwise inevitable if either of the two spectra alone is used. When including the galaxy power spectrum information up to $k=0.3h$Mpc${}^{-1}$, we find about factor of 6 gain in the cosmological information content of (${\sigma }_8,{\Omega }_{\mathrm{m}},D_{\mathrm{A}}$'s and $H$'s) compared to $k=0.2h$Mpc${}^{-1}$.

Accepted for publication in Phys. Rev. D; 32 pages, 18 figures

References in corpus (13)

• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Transients from Initial Conditions in Cosmological Simulations
• Assembly bias in the clustering of dark matter haloes
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Anisotropic galaxy clustering in Fourier-space
• A universal model for halo concentrations
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in Fourier-space
• The Weak Lensing Signal and the Clustering of BOSS Galaxies II: Astrophysical and Cosmological Constraints
• Constraining Anisotropic Baryon Oscillations
• Systematic Effects on Determination of the Growth Factor from Redshift-space Distortions
• Forecasting the Cosmological Constraints with Anisotropic Baryon Acoustic Oscillations from Multipole Expansion
• Extending the modeling of the anisotropic galaxy power spectrum to $k=0.4h{\mathrm{Mpc}}^{-1}$
• Halo velocity profiles in screened modified gravity theories
• Wide-Field InfraRed Survey Telescope (WFIRST) Mission and Synergies with LISA and LIGO-Virgo

Cited by in corpus (19)

• Cosmological Parameters from the BOSS Galaxy Power Spectrum
• Cosmology from large-scale structure: Constraining $\Lambda$CDM with BOSS
• Blinded challenge for precision cosmology with large-scale structure: results from effective field theory for the redshift-space galaxy power spectrum
• Cosmological constraints from BOSS with analytic covariance matrices
• Full-shape cosmology analysis of SDSS-III BOSS galaxy power spectrum using emulator-based halo model: a $5\%$ determination of ${\sigma }_8$
• Accurate emulator for the redshift-space power spectrum of dark matter halos and its application to galaxy power spectrum
• Power spectrum of halo intrinsic alignments in simulations
• A Hybrid Deep Learning Approach to Cosmological Constraints From Galaxy Redshift Surveys
• Validating a minimal galaxy bias method for cosmological parameter inference using HSC-SDSS mock catalogs
• Cosmological inference from emulator based halo model I: Validation tests with HSC and SDSS mock catalogs
• Observational constraints of an anisotropic boost due to the projection effects using redMaPPer clusters
• Modeling assembly bias with machine learning and symbolic regression
• Galaxy clustering from the bottom up: A Streaming Model emulator I
• Cosmology in the non-linear regime : the small scale miracle
• Information content in anisotropic cosmological fields: Impact of different multipole expansion scheme for galaxy density and ellipticity correlations
• Mock catalogues of emission line galaxies based on the local mass density in dark-matter only simulations
• Geometry vs growth: Internal consistency of the flat ΛCDM model with KiDS-1000
• The impact of projection effects on cluster observables: stacked lensing and projected clustering
• The impact of the redshift-dependent selection effect of halos on the redshift-space power spectrum