The WiggleZ Dark Energy Survey: the growth rate of cosmic structure since redshift z=0.9

Abstract

We present precise measurements of the growth rate of cosmic structure for the redshift range 0.1 < z < 0.9, using redshift-space distortions in the galaxy power spectrum of the WiggleZ Dark Energy Survey. Our results, which have a precision of around 10% in four independent redshift bins, are well-fit by a flat LCDM cosmological model with matter density parameter Omega_m = 0.27. Our analysis hence indicates that this model provides a self-consistent description of the growth of cosmic structure through large-scale perturbations and the homogeneous cosmic expansion mapped by supernovae and baryon acoustic oscillations. We achieve robust results by systematically comparing our data with several different models of the quasi-linear growth of structure including empirical models, fitting formulae calibrated to N-body simulations, and perturbation theory techniques. We extract the first measurements of the power spectrum of the velocity divergence field, P_vv(k), as a function of redshift (under the assumption that P_gv(k) = -sqrt[P_gg(k) P_vv(k)] where g is the galaxy overdensity field), and demonstrate that the WiggleZ galaxy-mass cross-correlation is consistent with a deterministic (rather than stochastic) scale-independent bias model for WiggleZ galaxies for scales k < 0.3 h/Mpc. Measurements of the cosmic growth rate from the WiggleZ Survey and other current and future observations offer a powerful test of the physical nature of dark energy that is complementary to distance-redshift measures such as supernovae and baryon acoustic oscillations.

17 pages, 11 figures, accepted for publication by MNRAS

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• Cosmological constraints from the redshift dependence of the Alcock-Paczynski effect: Fourier space analysis
• All-sky angular power spectra from cleaned WISE$\times$SuperCOSMOS galaxy number counts
• Measuring the growth of structure by matching dark matter haloes to galaxies with VIPERS and SDSS
• Redshift-space distortion constraints on the neutrino mass and models to alleviate the Hubble tension
• Accelerated expansion induced by Dark Matter with two charges
• What is the optimal way to measure the galaxy power spectrum?
• Chasing Unbiased Spectra of the Universe
• Constraining Neutrinos and Dark Energy with Galaxy Clustering in the Dark Energy Survey
• Improving Constraint on ${\Omega }_m$ from SDSS Using Marked Correlation Functions
• Cosmological constraints from the redshift dependence of the Alcock-Paczynski effect: Possibility of estimateing the non-linear systematics using fast simulations
• Measurement of the Weyl potential evolution from the first three years of Dark Energy Survey data
• Two-point correlation function of density perturbations in a large void universe
• FIELD: An automated emission-line detection software for Subaru/FMOS near-infrared spectroscopy
• A Study of Selection Methods for H alpha Emitting Galaxies at z~1.3 for the Subaru/FMOS Galaxy Redshift Survey for Cosmology (FastSound)
• Augmenting photometric redshift estimates using spectroscopic nearest neighbours
• Squeezing Full-Shape Dynamical Dark Energy Constraints with Galaxy Alignments
• Early dark energy in the pre- and post-recombination epochs
• The gravitational force field of proto-pancakes
• New measures to test modified gravity cosmologies
• Galaxy and Mass Assembly (GAMA): Probing galaxy-group correlations in redshift space with the halo streaming model
• Novel Cosmological Joint Constraints in Multidimensional Observables Space with Redshift-free Inferences
• Scaling of the 1-halo terms with bias
• New parameterizations of generalized Chaplygin gas model constrained at background and perturbation levels
• Realizing the phantom-divide crossing with vector and scalar fields
• A method to extract the redshift distortions beta parameter in configuration space from minimal cosmological assumptions
• Cosmological perturbation theory for large scale structure in phase space
• Tomographic Alcock-Paczynski Method with Redshift Errors
• A Dynamic Dark Information Energy Consistent with Planck Data
• The RSD Sorting Hat: Unmixing Radial Scales in Projection
• Experimental evaluation of complete safe coordination of astrobots for Sloan Digital Sky Survey V
• Direct Determination of Expansion History Using Redshift Distortions
• The Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Growth rate of structure measurement from cosmic voids
• Toward accurate measurement of property-dependent galaxy clustering I. Comparison of the Vmax method and the "shuffled" method
• Constraining disformal couplings with Redshift Space Distortion
• Observational constraints on thawing quintessence scalar field model
• Improving cosmological constraints via galaxy intrinsic alignment in full-shape analysis
• A semi-analytic estimate for the effective sound speed counterterm in the EFTofLSS
• Perspectives for studying the dark energy at z>2 with galaxy surveys
• Largest scales from the largest galaxy surveys: the pseudo Karhunen-Loève method
• A New Wavelet Scattering Transform-Based Statistic for Cosmological Analysis of Large-Scale Structure
• Structure formation in a non-canonical scalar field model of clustering dark energy
• Revisiting dynamics of interacting quintessence
• Testing the growth of cosmic structures during the Dark Ages
• Anisotropic Counts-in-Cells in Redshift Space: A New Route to Cosmological Constraints from Galaxy Surveys
• On the road to percent accuracy VI: the nonlinear power spectrum for interacting dark energy with baryonic feedback and massive neutrinos
• Cosmological constraints from the density gradient weighted correlation function
• Tomographic Alcock-Paczynski Test with Marked Correlation Functions
• Interacting dark energy from redshift-space galaxy clustering
• Expansion series of the pairwise velocity generating function and its implications on redshift space distortion modeling
• Late-time cosmological constraints on three holographic dark energy models with DESI DR2 BAO and Type Ia supernovae
• Machine learning analysis of Photometric data from the Dark Energy Survey
• The Covariance of Photometric and Spectroscopic Two-Point Statistics: Implications for Cosmological Parameter Inference
• $S_8$ from peculiar velocities: agreement with Planck for Tully--Fisher and supernovae, tension for the fundamental plane