Confirmation of general relativity on large scales from weak lensing and galaxy velocities

Reinabelle Reyes (), Rachel Mandelbaum, Uros Seljak, Tobias Baldauf, James E. Gunn, Lucas Lombriser and Robert E. Smith
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Reinabelle Reyes: Princeton University Observatory, Peyton Hall, Princeton, New Jersey 08544, USA
Rachel Mandelbaum: Princeton University Observatory, Peyton Hall, Princeton, New Jersey 08544, USA
Uros Seljak: Institute for Theoretical Physics, University of Zurich
Tobias Baldauf: Institute for Theoretical Physics, University of Zurich
James E. Gunn: Princeton University Observatory, Peyton Hall, Princeton, New Jersey 08544, USA
Lucas Lombriser: Institute for Theoretical Physics, University of Zurich
Robert E. Smith: Institute for Theoretical Physics, University of Zurich

Nature, 2010, vol. 464, issue 7286, 256-258

Abstract: General relativity stacks up Modern cosmology relies on the assumption that general relativity is a valid theory of gravity at cosmological scales, though until now no test of the proposition has been possible. One such test was recently proposed, though, based on a determination of a quantity EG that combines measures of large-scale gravitational lensing, galaxy clustering, and the growth rate of structure as predicted by the standard model. Reyes et al. report a measurement of EG = 0.39±0.06 based on data from a sample of more than 70,000 distant galaxies, which is consistent with the value of 0.4 predicted by general relativity.

Date: 2010
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DOI: 10.1038/nature08857

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