Testing General Relativity with Current Cosmological Data
Abstract
Deviations from general relativity, such as could be responsible for the cosmic acceleration, would influence the growth of large scale structure and the deflection of light by that structure. We clarify the relations between several different model independent approaches to deviations from general relativity appearing in the literature, devising a translation table. We examine current constraints on such deviations, using weak gravitational lensing data of the CFHTLS and COSMOS surveys, cosmic microwave background radiation data of WMAP5, and supernova distance data of Union2. Markov Chain Monte Carlo likelihood analysis of the parameters over various redshift ranges yields consistency with general relativity at the 95% confidence level.
Cite
@article{arxiv.1002.1962,
title = {Testing General Relativity with Current Cosmological Data},
author = {Scott F. Daniel and Eric V. Linder and Tristan L. Smith and Robert R. Caldwell and Asantha Cooray and Alexie Leauthaud and Lucas Lombriser},
journal= {arXiv preprint arXiv:1002.1962},
year = {2014}
}
Comments
11 pages; 7 figures; typographical errors corrected; this is the published version