The signature of dark energy perturbations in galaxy cluster surveys

Abstract

All models of dynamical dark energy possess fluctuations, which affect the number of galaxy clusters in the Universe. We have studied the impact of dark energy clustering on the number of clusters using a generalization of the spherical collapse model and the Press-Schechter formalism. Our statistical analysis is performed in a 7-parameter space using the Fisher matrix method, for several hypothetical Sunyaev-Zel'dovich and weak lensing (shear maps) surveys. In some scenarios, the impact of these fluctuations is large enough that their effect could already be detected by existing instruments such as the South Pole Telescope, when its data is combined with WMAP and SDSS. Future observations could go much further and probe the nature of dark energy by distinguishing between different models on the basis of their perturbations, not only their expansion histories.

arXiv comment5 pages, 4 figures

References in corpus (58)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• Cosmological Imprint of an Energy Component with General Equation of State
• 4D Gravity on a Brane in 5D Minkowski Space
• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• Accelerating Universes with Scaling Dark Matter
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• Is Cosmic Speed-Up Due to New Gravitational Physics?
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Chandra Cluster Cosmology Project III: Cosmological Parameter Constraints
• Cluster Abundance Constraints on Quintessence Models
• Observational Constraints on the Nature of the Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
• The Cosmology of Generalized Modified Gravity Models
• Sample Variance Considerations for Cluster Surveys
• Constraints on Cosmological Parameters from Future Galaxy Cluster Surveys
• Report of the Dark Energy Task Force
• The Cluster Abundance in Flat and Open Cosmologies
• Cosmic Structure Growth and Dark Energy
• Crossing the Phantom Divide: Dark Energy Internal Degrees of Freedom
• The South Pole Telescope
• On the spherical collapse model in dark energy cosmologies
• Dynamical Lambda Models of Structure Formation
• Non-linear Evolution of f(R) Cosmologies III: Halo Statistics
• Constraining Omega with Cluster Evolution
• Dark Synergy: Gravitational Lensing and the CMB
• Self Calibration in Cluster Studies of Dark Energy: Combining the Cluster Redshift Distribution, the Power Spectrum and Mass Measurements
• Measuring the Speed of Sound of Quintessence
• The acceleration of the universe and the physics behind it
• Signature of the interaction between dark energy and dark matter in galaxy clusters
• Structure formation in the presence of dark energy perturbations
• Structure Formation in Inhomogeneous Dark Energy Models
• Constraining cosmological parameters using Sunyaev-Zel'dovich cluster surveys
• Figure of Merit for Dark Energy Constraints from Current Observational Data
• Effects of the Sound Speed of Quintessence on the Microwave Background and Large Scale Structure
• Cluster number counts dependence on dark energy inhomogeneities and coupling to dark matter
• Probing dark energy with cluster counts and cosmic shear power spectra: including the full covariance
• On virialization with dark energy
• Constraining dark energy with Sunyaev-Zel'dovich cluster surveys
• Physical approximations for the nonlinear evolution of perturbations in dark energy scenarios
• Constraining the Evolution of Dark Energy with a Combination of Galaxy Cluster Observables
• Findings of the Joint Dark Energy Mission Figure of Merit Science Working Group
• Cosmological Perturbation Theory and the Spherical Collapse Model - I. Gaussian Initial Conditions
• Modelling galaxy halos using dark matter with pressure
• Observational tests of x-matter models
• Parameterizing the Effect of Dark Energy Perturbations on the Growth of Structures
• Can a galaxy redshift survey measure dark energy clustering?
• Voids of dark energy
• Constraining Born-Infeld models of dark energy with CMB anisotropies
• On the Magnitude of Dark Energy Voids and Overdensities
• Dark energy constraints from lensing-detected galaxy clusters
• Dynamical Mutation of Dark Energy
• Cluster Formation Rate in Models with Dark Energy
• Number counts in homogeneous and inhomogeneous dark energy models
• Supernova / Acceleration Probe: A Satellite Experiment to Study the Nature of the Dark Energy
• Dark energy parameterizations and their effect on dark halos

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• Simultaneous Falsification of LCDM and Quintessence with Massive, Distant Clusters
• Structure formation in inhomogeneous Early Dark Energy models
• Spherical collapse model in dark energy cosmologies
• Theoretical Priors On Modified Growth Parametrisations
• Effects of shear and rotation on the spherical collapse model for clustering dark energy
• Spherical collapse of dark energy with an arbitrary sound speed
• Variable sound speed in interacting dark energy models
• Spherical Collapse in Chameleon Models
• On the implementation of the spherical collapse model for dark energy models
• Galaxy cluster number count data constraints on cosmological parameters
• Constraining dark energy fluctuations with supernova correlations
• Effects of ghost dark energy perturbations on the evolution of spherical overdensities
• Growth of spherical overdensities in scalar-tensor cosmologies
• A short review on clustering dark energy
• Cold dark energy constraints from the abundance of galaxy clusters
• Spherical collapse of dark matter haloes in tidal gravitational fields
• Confronting the sound speed of dark energy with future cluster surveys
• Dark energy homogeneity in general relativity: Are we applying it correctly?
• Shear and vorticity in the spherical collapse of dark matter haloes
• Do Bound Structures Brake Cosmic Acceleration?
• Generalized Layzer-Irvine equation: the role of dark energy perturbations in cosmic structure formation
• Structure formation in clustering DBI dark energy model with constant sound speed
• Sub-horizon evolution of cold dark matter perturbations through dark matter-dark energy equivalence epoch
• Effects of tidal gravitational fields in clustering dark energy models
• The growth of DM and DE perturbations in DBI non-canonical scalar field scenario
• Improved Lemaitre-Tolman model and the mass and turn-around radius in group of galaxies II: the role of dark energy
• Tidal virialization of dark matter haloes with clustering dark energy
• Improved Lemaitre-Tolman model and the mass and turn-around radius in group of galaxies
• Effects of dynamical friction on perturbations for evolving dark energy
• Cluster number counts in quintessence models