Tests of General Relativity on Astrophysical Scales

TL;DR

This paper reviews tests of general relativity on large astrophysical scales, especially through weak lensing, highlighting the importance of these tests in understanding dark matter and dark energy in cosmology.

Contribution

It provides a comprehensive overview of large-scale tests of general relativity, emphasizing weak lensing and its role in cosmological models.

Findings

Weak lensing tests support general relativity on large scales

Complementarity of large-scale tests with Solar system experiments

Implications for dark matter and dark energy models

Abstract

While tested to a high level of accuracy in the Solar system, general relativity is under the spotlight of both theoreticians and observers on larger scales, mainly because of the need to introduce dark matter and dark energy in the cosmological model. This text reviews the main tests of general relativity focusing on the large scale structure and more particularly weak lensing. The complementarity with other tests (including those on Solar system scales and the equivalence principle) is discussed.