A test of the nature of cosmic acceleration using galaxy redshift distortions

Abstract

Observations of distant supernovae indicate that the Universe is now in a phase of accelerated expansion the physical cause of which is a mystery. Formally, this requires the inclusion of a term acting as a negative pressure in the equations of cosmic expansion, accounting for about 75 per cent of the total energy density in the Universe. The simplest option for this "dark energy" corresponds to a cosmological constant, perhaps related to the quantum vacuum energy. Physically viable alternatives invoke either the presence of a scalar field with an evolving equation of state, or extensions of general relativity involving higher-order curvature terms or extra dimensions. Although they produce similar expansion rates, different models predict measurable differences in the growth rate of large-scale structure with cosmic time. A fingerprint of this growth is provided by coherent galaxy motions, which introduce a radial anisotropy in the clustering pattern reconstructed by galaxy redshift surveys. Here we report a measurement of this effect at a redshift of 0.8. Using a new survey of more than 10,000 faint galaxies, we measure the anisotropy parameter b = 0.70 +/- 0.26, which corresponds to a growth rate of structure at that time of f = 0.91 +/- 0.36. This is consistent with the standard cosmological-constant model with low matter density and flat geometry, although the error bars are still too large to distinguish among alternative origins for the accelerated expansion. This could be achieved with a further factor-of-ten increase in the sampled volume at similar redshift.

arXiv commentOne PDF file including both main paper and Supplementary Information (28 pages, 3+2 figures). Published version available at http://www.nature.com/nature/journal/v451/n7178/abs/nature06555.html

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• The growth of matter perturbations in the f(T) gravity
• Evolution of density perturbations in large void universe
• Likelihood reconstruction method of real-space density and velocity power spectra from a redshift galaxy survey
• Density preturbations in a finite scale factor singularity universe
• Luminosity bias: from haloes to galaxies
• Modelling the matter bispectrum at small scales in modified gravity
• Measuring the Hubble function with standard candle clustering
• Group-galaxy correlations in redshift space as a probe of the growth of structure
• Modelling the asymmetry of the halo cross-correlation function with relativistic effects at quasi-linear scales
• Redshift-space distortions from the cross-correlation of photometric populations
• Reduced modified Chaplygin gas cosmology
• Measurement of Redshift Space Power Spectrum for BOSS galaxies and the Growth Rate at redshift 0.57
• Constraining constant and tomographic coupled dark energy with low-redshift and high-redshift probes
• Probing the nature of cosmic acceleration
• Growth-rate measurement with type-Ia supernovae using ZTF survey simulations
• Impacts of biasing schemes in the one-loop integrated perturbation theory
• Perturbation theory for the redshift-space matter power spectra after reconstruction
• Galaxy and Mass Assembly (GAMA): Small-scale anisotropic galaxy clustering and the pairwise velocity dispersion of galaxies
• Robust constraints on dark energy and gravity from galaxy clustering data
• GCG Parametrization for Growth Function and Current Constraints
• Testing dark energy using pairs of galaxies in redshift space
• Decomposition of Spectra from Redshift Distortion Maps
• Disentangling redshift-space distortions and nonlinear bias using the 2D power spectrum
• Raytracing simulations of coupled dark energy models
• Cosmological constraints on polytropic gas model
• Model-Independent Measurements of Cosmic Expansion and Growth at z=0.57 Using the Anisotropic Clustering of CMASS Galaxies From the Sloan Digital Sky Survey Data Release 9
• The Subaru FMOS Galaxy Redshift Survey (FastSound). II. The Emission Line Catalog and Properties of Emission Line Galaxies
• Constraints on running vacuum model with $H(z)$ and $f{\sigma }_8$
• Modelling non-linear evolution using Lagrangian Perturbation Theory (LPT) re-expansions
• Tracing the cosmic velocity field at z ~ 0.1 from galaxy luminosities in the SDSS DR7
• The Complementarity of Redshift-space Distortions and the Integrated Sachs-Wolfe Effect: A 3D Spherical Analysis
• Dilaton dominance in the early Universe dilutes Dark Matter relic abundances
• Covariance of the redshift-space matter power spectrum after reconstruction
• Halo-model analysis of the clustering of photometric luminous red galaxies at $0.10\le z\le 1.05$ from the Subaru Hyper Suprime-Cam Survey
• Model Independent Tests of Cosmic Gravity
• Stringent Restriction from the Growth of Large-Scale Structure on Apparent Acceleration in Inhomogeneous Cosmological Models
• Reconstructing Cosmological Matter Perturbations using Standard Candles and Rulers
• Cosmological perturbations in $k$-essence model
• Probing dark energy with the next generation X-ray surveys of galaxy clusters
• Generating mock galaxy catalogues for flux-limited samples like the DESI Bright Galaxy Survey
• The VIMOS Public Extragalactic Redshift Survey (VIPERS): On the correct recovery of the count-in-cell probability distribution function
• From model dynamics to oscillating dark energy parameterisation
• Baryon Acoustic Oscillations in the projected cross-correlation function between the eBOSS DR16 quasars and photometric galaxies from the DESI Legacy Imaging Surveys
• Dynamics and constraints of the dissipative Liouville cosmology
• The Effect of Assembly Bias on Redshift Space Distortions
• Broadband Alcock-Paczynski test exploiting redshift distortions
• The VIMOS Public Extragalactic Redshift Survey (VIPERS). The matter density and baryon fraction from the galaxy power spectrum at redshift $0.6<z<1.1$
• Redshift-space correlation functions in large galaxy cluster surveys
• Future constraints on the Hu-Sawicki modified gravity scenario
• Reducing the Variance of Redshift Space Distortion Measurements from Mock Galaxy Catalogues with Different Lines of Sight
• Cosmological Information from the Small-scale Redshift Space Distortions
• Asymptotic Analysis of the Boltzmann Equation for Dark Matter Relics
• Testing Dark Matter Clustering with Redshift Space Distortions
• The VIMOS VLT Deep Survey: Testing the gravitational instability paradigm at z ~ 1
• Distinguishing between $\Lambda$CDM and $f(R)$ gravity models using halo ellipticity correlations in simulations
• Cosmological Perturbations and the Running Cosmological Constant Model
• Cosmological Constraints from the Anisotropic Clustering Analysis using BOSS DR9
• Determination of the abundance of cosmic matter via the cell count moments of the galaxy distribution (1)
• Bayesian redshift-space distortions correction from galaxy redshift surveys
• Properties of the exact analytic solution of the growth factor and its applications
• Measuring BAO and non-Gaussianity via QSO clustering
• Reconstruction of the null-test for the matter density perturbations
• Expected properties of the Two-Point Autocorrelation Function of the IGM
• Hybrid modeling of redshift space distortions
• The Peculiar Velocity Correlation Function
• Modifying Gravity at Low Redshift
• The Integrated Sachs-Wolfe Effect in Time Varying Vacuum Model
• Simulating the Anisotropic Clustering of Luminous Red Galaxies with Subhalos: A Direct Confrontation with Observation and Cosmological Implications
• Late time acceleration in a slow moving galileon field
• Galaxy Clustering in 3D and Modified Gravity Theories
• Extracting high-order cosmological information in galaxy surveys with power spectra
• A joint 2- and 3-point clustering analysis of the VIPERS PDR2 catalogue at z~1: breaking the degeneracy of cosmological parameters
• Reconstructing a non-linear interaction in the dark sector with cosmological observations
• Kriging Interpolating Cosmic Velocity Field
• Fingers-of-God effect of infalling satellite galaxies
• Second-order matter fluctuations via higher-order galaxy correlators
• Testing gravity with halo density profiles observed through gravitational lensing
• Statistical Determination of Bulk Flow Motions
• Forecasting cosmological parameter constraints from near-future space-based galaxy surveys
• The $n$-point streaming model: how velocities shape correlation functions in redshift space
• Analytical Gaussian Process Cosmography: Unveiling Insights into Matter-Energy Density Parameter at Present
• Constraining Halo Occupation Distribution and Cosmic Growth Rate using Multipole Power Spectrum
• The association between gas and galaxies III: The Cross-correlation of Galaxies and Ly-alpha Absorbers at z ~ 1
• The generalized evolution of linear bias: a tool to test gravity
• Holographic Dark Information Energy
• Testing the $R_{\mathrm{h}}=ct$ Universe Jointly with the Redshift-dependent Expansion rate and Angular-diameter and Luminosity Distances
• The cosmology of $f(R,L_m)$ gravity: constraining the background and perturbed dynamics
• Testing Standard Cosmology with Large Scale Structure
• Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Cross-correlation with the cosmic microwave background
• Quantifying the coherent outflows of galaxies around voids in the SDSS DR7
• Testing General Relativity Using the Evolution of Linear Bias
• Quantifying the redshift space distortion of the bispectrum III : Detection prospects of the multipole moments
• Using the Modified Nearest Neighbor Method to Correct Fiber-collision Effects on Galaxy Clustering
• Dilaton dominance relaxes LHC and cosmological constraints in supersymmetric models
• Current cosmological constraints on the curvature, dark energy and modified gravity
• Non-linear cosmological collapse of quintessence
• The full-sky Spherical Fourier-Bessel power spectrum in general relativity
• Forecasts on neutrino mass constraints from the redshift-space two-point correlation function
• Euclid preparation. XXVII. A UV-NIR spectral atlas of compact planetary nebulae for wavelength calibration
• Window effect in the power spectrum analysis of a galaxy redshift survey
• Kriging interpolating cosmic velocity field. II. Taking anistropies and multistreaming into account
• Running vacuum model in non-flat universe
• Improved parametrization of the growth index for dark energy and DGP models
• Growth of matter fluctuations in $f(R,T)$ Gravity
• On the necessity of the revisions for the cosmological matter perturbations from the general relativity
• Towards an accurate model of small-scale redshift-space distortions in modified gravity
• First and second order cosmological perturbations in light mass Galileon models
• Simultaneous effect of Modified Gravity and Primordial Non-Gaussianity in Large Scale Structure Observations
• Choose to smooth: Gaussian streaming with the truncated Zel'dovich approximation
• Study on the mapping of halo clustering from real space to redshift space
• Towards an optimal marked correlation function analysis for the detection of modified gravity
• Fast analytical calculation of the random pair counts for realistic survey geometry
• Nonlinear redshift space distortion in halo ellipticity correlations: Analytical model and N-body simulations
• Evolution mapping II: describing statistics of the non-linear cosmic velocity field
• Simultaneous constraints on bias, normalization and growth index through power spectrum measurements
• Nonlinear stochastic growth rates and redshift space distortions
• Evolution of dissipative and non-dissipative universes in holographic cosmological models with a power-law term
• Expansion and Growth of Structure Observables in a Macroscopic Gravity Averaged Universe
• What can we learn from higher multipole power spectra of galaxy distribution in redshift space?
• Quantification of the multi-streaming effect in Redshift Space Distortion
• Non-linear density-velocity divergence relation from phase space dynamics
• Isolating the linear signal when making redshift space distortion measurements
• Testing the local-void alternative to dark energy using galaxy pairs
• Modeling galaxy clustering on small scales to tighten constraints on dark energy and modified gravity
• The exact analytical solution of the linear structure growth rate in LCDM cosmology and its cosmological applications
• Measuring the matter energy density and Hubble parameter from Large Scale Structure
• Mass accretion rates of the HectoMAP clusters of galaxies
• Precise peculiar velocities from gravitational waves accompanied by electromagnetic signals and cosmological applications
• Cosmic voids and induced hyperbolicity. II. Sensitivity to void/wall scales
• Cosmic constraint on the unified model of dark sectors with or without a cosmic string fluid in the varying gravitational constant theory
• Halo Profile Evolution and Velocity Bias
• Constraining dark energy using observational growth rate data
• Model-Independent Dark Energy Measurements from DESI DR2 and Planck 2015 Data
• Holographic dark information energy: Predicted dark energy measurement
• Cosmic Growth Signatures of Modified Gravitational Strength
• A comprehensive data-driven odyssey to explore the equation of state of dark energy
• Local measurement of Λ using pulsar timing arrays
• Cosmic voids and induced hyperbolicity
• Constraining Dynamical Dark Energy Models through the Abundance of High-Redshift Supermassive Black Holes
• Impact of lensing magnification on the analysis of galaxy clustering in redshift space
• A Study of Selection Methods for H alpha Emitting Galaxies at z~1.3 for the Subaru/FMOS Galaxy Redshift Survey for Cosmology (FastSound)
• Anisotropic effective redshift and evolving clustering amplitude
• Squeezing Full-Shape Dynamical Dark Energy Constraints with Galaxy Alignments
• 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
• Brane cosmology from observational surveys and its comparison with standard FRW cosmology
• Measuring the growth of structure by matching dark matter haloes to galaxies with VIPERS and SDSS
• Chasing Unbiased Spectra of the Universe
• Cosmic voids and induced hyperbolicity. III. tracing redshift dependence
• Breaking the ${\tau }_{\mathrm{T}}-f$ degeneracy of the kinetic Sunyaev Zel'dovich cosmology in redshift space
• Constraining the runaway dilaton and quintessential dark energy
• Determining accurate measurements of the growth rate from the galaxy correlation function in simulations
• Novel Cosmological Joint Constraints in Multidimensional Observables Space with Redshift-free Inferences
• Implications of Dynamical Dark Energy in the expansion of the Universe and the Structure Formation
• Constraining Scale Dependent Growth with Redshift Surveys
• Galaxy and Mass Assembly (GAMA): Probing galaxy-group correlations in redshift space with the halo streaming model
• Confronting the damping of the baryon acoustic oscillations with observation
• A method to extract the redshift distortions beta parameter in configuration space from minimal cosmological assumptions
• On the propagation of gravitational waves in a $\Lambda$CDM universe
• Early dark energy in the pre- and post-recombination epochs
• New measures to test modified gravity cosmologies
• Modeling spatially-resolved galactic H$\alpha$ emission for galaxy clustering
• A Dynamic Dark Information Energy Consistent with Planck Data
• Phenomenological power spectrum models for H$\alpha$ emission line galaxies from the Nancy Grace Roman Space Telescope
• Euclid preparation. 3-dimensional galaxy clustering in configuration space. Part I. 2-point correlation function estimation
• Measuring $H_0$ with pulsar timing arrays
• The RSD Sorting Hat: Unmixing Radial Scales in Projection
• The expansion of the universe observed with supernovae
• Direct Determination of Expansion History Using Redshift Distortions
• Model-independent constraints on clustering and growth of cosmic structures from BOSS DR12 galaxies in harmonic space
• Gravitational redshift in the void-galaxy cross-correlation function in redshift space
• Redshift-space galaxy bispectrum in presence of massive neutrinos: A multipole expansion approach for Euclid
• Constraint on the growth factor of the cosmic structure from the damping of the baryon acoustic oscillation signature
• Glass-Like Random Catalogues for Two-Point Estimates on the Light Cone
• Toward accurate measurement of property-dependent galaxy clustering I. Comparison of the Vmax method and the "shuffled" method
• The Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Growth rate of structure measurement from cosmic voids
• Constraining disformal couplings with Redshift Space Distortion
• Reconstructing the velocity field beyond the local universe
• Cosmology behind the mask: Constraining the parameters of $\Lambda$CDM with the unmasked galaxy density field from VIPERS
• Perspectives for studying the dark energy at z>2 with galaxy surveys
• Preliminary clustering properties of the DESI BGS bright targets using DR9 Legacy Imaging Surveys
• A New Wavelet Scattering Transform-Based Statistic for Cosmological Analysis of Large-Scale Structure
• Mass of Neutron Star in SdS space-time
• A Null Test of the Metric Nature of the Cosmic Acceleration
• Modeling and measuring the anisotropic halo 3-point correlation function: a coordinated study
• Improving cosmological constraints via galaxy intrinsic alignment in full-shape analysis
• Testing local position invariance with odd multipoles of galaxy clustering statistics
• Coupling dark-baryonic matter density profile for vacuum decay scenarios
• The Covariance of Photometric and Spectroscopic Two-Point Statistics: Implications for Cosmological Parameter Inference
• Beyond LCDM: Bits join the Dark Side
• Euclid preparation. Full-shape modelling of 2-point and 3-point correlation functions in real space
• Testing the growth of cosmic structures during the Dark Ages
• Tracing Signatures of Modified Gravity in Redshift-Space Galaxy Bispectrum Multipoles: Prospects for Euclid
• A lightcone catalogue from the Millennium-XXL simulation: improved spatial interpolation and colour distributions for the DESI BGS
• FuGa3D: Fast full-sky analysis of Galaxy catalogs in 3D
• Gravitational redshift from large-scale structure: nonlinearities, antisymmetries, and the dipole
• Anisotropic Counts-in-Cells in Redshift Space: A New Route to Cosmological Constraints from Galaxy Surveys
• Solving small-scale clustering problems in approximate lightcone mocks
• Turning dispersion into signal: density-split analyses of pairwise velocities
• Interacting dark energy from redshift-space galaxy clustering
• Expansion series of the pairwise velocity generating function and its implications on redshift space distortion modeling