Current constraints on the cosmic growth history

Abstract

We present constraints on the cosmic growth history with recent cosmological data, allowing for deviations from Lambda CDM as might arise if cosmic acceleration is due to modifications to GR or inhomogeneous dark energy. We combine measures of the cosmic expansion history, from Type 1a supernovae, baryon acoustic oscillations and the CMB, with constraints on the growth of structure from recent galaxy, CMB and weak lensing surveys along with ISW-galaxy cross-correlations. Deviations from Lambda CDM are parameterized by phenomenological modifications to the Poisson equation and the relationship between the two Newtonian potentials. We find modifications that are present at the time the CMB is formed are tightly constrained through their impact on the well-measured CMB acoustic peaks. By contrast, constraints on late-time modifications to the growth history, as might arise if modifications are related to the onset of cosmic acceleration, are far weaker, but remain consistent with Lambda CDM at the 95% confidence level. For these late-time modifications we find that differences in the evolution on large and small scales could provide an interesting signature by which to search for modified growth histories with future wide angular coverage, large scale structure surveys.

14 pages, 10 figures. Replaced with version accepted by Physical Review D

References in corpus (44)

• Dynamics of dark energy
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Modified f(R) gravity consistent with realistic cosmology: from matter dominated epoch to dark energy universe
• Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
• The imprints of primordial non-gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects
• Cosmological viability of f(R)-gravity as an ideal fluid and its compatibility with a matter dominated phase
• The Large Scale Structure of f(R) Gravity
• A Parameterized Post-Friedmann Framework for Modified Gravity
• Measuring the dark side (with weak lensing)
• A discriminating probe of gravity at cosmological scales
• Approaches to Understanding Cosmic Acceleration
• Large Scale Structure as a Probe of Gravitational Slip
• New Perspective on Galaxy Clustering as a Cosmological Probe: General Relativistic Effects
• Correlation of CMB with large-scale structure: I. ISW Tomography and Cosmological Implications
• Distinguishing Modified Gravity from Dark Energy
• Matter density perturbations and effective gravitational constant in modified gravity models of dark energy
• Searching for modified growth patterns with tomographic surveys
• COSMOS: 3D weak lensing and the growth of structure
• Observational Tests of Modified Gravity
• A f(R) gravity without cosmological constant
• Cluster Constraints on f(R) Gravity
• Dark Energy versus Modified Gravity
• Testing LCDM with the Growth Function δ(a): Current Constraints
• On the Growth of Perturbations as a Test of Dark Energy
• On the growth of linear perturbations
• Cosmological Constraints on f(R) Acceleration Models
• Constraints on a New Post-General Relativity Cosmological Parameter
• Constraining dark energy with cross-correlated CMB and Large Scale Structure data
• Differentiating dark energy and modified gravity with galaxy redshift surveys
• Is Modified Gravity Required by Observations? An Empirical Consistency Test of Dark Energy Models
• Fingerprinting dark energy
• N-Body Simulations of Alternate Gravity Models
• Consistency test of general relativity from large scale structure of the Universe
• Nonlinear growth in modified gravity theories of dark energy
• A combined analysis of 3D Weak Lensing, Lyman-alpha forest and WMAP year three data
• Impact of Scale Dependent Bias and Nonlinear Structure Growth on the ISW Effect: Angular Power Spectra
• Cosmological Constraints from Hubble Parameter on f(R) Cosmologies
• A Multi-Parameter Investigation of Gravitational Slip
• A step towards testing general relativity using weak gravitational lensing and redshift surveys
• Galaxy-CMB Cross-Correlation as a Probe of Alternative Models of Gravity
• Constraining DGP Gravity from Observational Data
• Observational Constraints with Recent Data on the DGP Modified Gravity
• Does Planck mass run on the cosmological horizon scale?

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• Confronting General Relativity with Further Cosmological Data
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• Anisotropic stress and stability in modified gravity models
• Exact nonlinear inhomogeneities in $\Lambda$CDM cosmology
• How to Falsify the GR+LambdaCDM Model with Galaxy Redshift Surveys
• Properties and uncertainties of scalar field models of dark energy with barotropic equation of state
• Coherent Combination of Baryon Acoustic Oscillation Statistics and Peculiar Velocity Measurements from Redshift Survey
• Constraining Models of Dark Energy