Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 465, Issue 4, Pages 4853-4865Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stw3056
Keywords
gravitation; galaxies: statistics; cosmological parameters; large-scale structure of Universe
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Funding
- NASA [12-EUCLID11-0004]
- NSF [AST1412966, AST1517593]
- DOE
- Japan Society for the Promotion of Science (JSPS) Research Fellowships for Young Scientists
- Jet Propulsion Laboratory, California Institute of Technology
- National Aeronautics and Space Administration
- Department of Energy Early Career Award programme
- Canadian Space Agency
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1412966] Funding Source: National Science Foundation
- Grants-in-Aid for Scientific Research [16H01089, 15K17600, 15K21733] Funding Source: KAKEN
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We measure a combination of gravitational lensing, galaxy clustering and redshift-space distortions (RSDs) called E-G. The quantity EG probes both parts of metric potential and is insensitive to galaxy bias and sigma(8). These properties make it an attractive statistic to test lambda cold dark matter, general relativity and its alternate theories. We have combined CMASS Data Release 11 with CFHTLenS and recent measurements of beta from RSD analysis, and find E-G(z = 0.57) = 0.42 +/- 0.056, a 13 per cent measurement in agreement with the prediction of general relativity EG(z = 0.57) = 0.396 +/- 0.011 using the Planck 2015 cosmological parameters. We have corrected our measurement for various observational and theoretical systematics. Our measurement is consistent with the first measurement of EG using cosmic microwave background lensing in place of galaxy lensing at small scales, but shows 2.8 sigma tension when compared with their final results including large scales. This analysis with future surveys will provide improved statistical error and better control over systematics to test general relativity and its alternate theories.
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