Testing gravity on cosmological scales with cosmic shear, cosmic microwave background anisotropies, and redshift-space distortions

Abstract

We use a range of cosmological data to constrain phenomenological modifications to general relativity on cosmological scales, through modifications to the Poisson and lensing equations. We include cosmic microwave background anisotropy measurements from the Planck satellite, cosmic shear from CFHTLenS and DES-SV, and redshift-space distortions from BOSS data release 12 and the 6dF galaxy survey. We find no evidence of departures from general relativity, with the modified gravity parameters constrained to ${\Sigma }_0=0.05_{-0.07}^{+0.05}$ and ${\mu }_0=-0.10_{-0.16}^{+0.20}$, where ${\Sigma }_0$ and ${\mu }_0$ refer to deviations from general relativity today and are defined to be zero in general relativity. We also forecast the sensitivity to those parameters of the full five-year Dark Energy Survey and of an experiment like the Large Synoptic Survey Telescope, showing a substantial expected improvement in the constraint on ${\Sigma }_0$.

12 pages, 10 figures

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Cited by in corpus (22)

• Testing General Relativity in Cosmology
• Dark Energy Survey Year 1 Results: Constraints on Extended Cosmological Models from Galaxy Clustering and Weak Lensing
• Effective Field Theory of Dark Energy: a Review
• The Novel Probes Project -- Tests of Gravity on Astrophysical Scales
• Tension of the $E_G$ statistic and RSD data with Planck/$\Lambda$CDM and implications for weakening gravity
• Optimising growth of structure constraints on modified gravity
• Testing Gravity on Cosmic Scales: A Case Study of Jordan-Brans-Dicke Theory
• COFFE: a code for the full-sky relativistic galaxy correlation function
• Dark Energy Survey internal consistency tests of the joint cosmological probes analysis with posterior predictive distributions
• Prospects of testing late-time cosmology with weak lensing of gravitational waves and galaxy surveys
• DES Y1 results: Splitting growth and geometry to test $\Lambda$CDM
• Current constraints on deviations from General Relativity using binning in redshift and scale
• A 5% measurement of the gravitational constant in the Large Magellanic Cloud
• Cosmological Tests of Gravity: A Future Perspective
• Modified Gravity and Dark Energy models Beyond $w(z)$CDM Testable by LSST
• Stacked phase-space density of galaxies around massive clusters: Comparison of dynamical and lensing masses
• Probing gravity with the DES-CMASS sample and BOSS spectroscopy
• Cosmological consequences of intrinsic alignments super-sample covariance
• Results and forecasts on cosmic inflation from weak lensing
• Cosmology with the Roman Space Telescope -- Synergies with CMB lensing
• Effect of dust in circumgalactic haloes on the cosmic shear power spectrum
• Categorizing models using Self-Organizing Maps: an application to modified gravity theories probed by cosmic shear