Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 456, Issue 3, Pages 2806-2828Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv2875
Keywords
surveys; dark energy; large-scale structure of Universe
Categories
Funding
- Australian Research Council
- NSF [1066293]
- European Research Council under the EC FP7 [240185]
- Deutsche Forschungsgemeinschaft [TR33, Hi 1495/2-1]
- NSERC of Canada
- STFC [ST/J004421/1]
- European Research Council [279396]
- Netherlands Organization for Scientific Research (NWO) [614.001.103]
- Canada Foundation for Innovation under the Compute Canada
- Government of Ontario
- Ontario Research Fund - Research Excellence
- University of Toronto
- Australian Research Council Discovery Project programme
- Alfred P. Sloan Foundation
- National Science Foundation
- US Department of Energy Office of Science
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- Carnegie Mellon University
- University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA Participation Group
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics
- New Mexico State University
- New York University
- Ohio State University
- Pennsylvania State University
- University of Portsmouth
- Princeton University
- Spanish Participation Group
- University of Tokyo
- University of Utah
- Vanderbilt University
- University of Virginia
- University of Washington
- Yale University
- STFC [ST/J004421/1, ST/J004421/2, ST/L00285X/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/J004421/1, ST/J004421/2] Funding Source: researchfish
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The unknown nature of 'dark energy' motivates continued cosmological tests of large-scale gravitational physics. We present a new consistency check based on the relative amplitude of non-relativistic galaxy peculiar motions, measured via redshift-space distortion, and the relativistic deflection of light by those same galaxies traced by galaxy-galaxy lensing. We take advantage of the latest generation of deep, overlapping imaging and spectroscopic data sets, combining the Red Cluster Sequence Lensing Survey, the Canada-France-Hawaii Telescope Lensing Survey, the WiggleZ Dark Energy Survey and the Baryon Oscillation Spectroscopic Survey. We quantify the results using the 'gravitational slip' statistic EG, which we estimate as 0.48 +/- 0.10 at z = 0.32 and 0.30 +/- 0.07 at z = 0.57, the latter constituting the highest redshift at which this quantity has been determined. These measurements are consistent with the predictions of General Relativity, for a perturbed Friedmann-Robertson-Walker metric in a Universe dominated by a cosmological constant, which are E-G = 0.41 and 0.36 at these respective redshifts. The combination of redshift-space distortion and gravitational lensing data from current and future galaxy surveys will offer increasingly stringent tests of fundamental cosmology.
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