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Abstract: General relativity as one the pillar of modern cosmology has to be thoroughlytested if we want to achieve an accurate cosmology. We present the results fromsuch a test on cosmological scales using cosmic shear and galaxy clusteringmeasurements. We parametrize potential deviation from general relativity as amodification to the cosmological Poisson equation. We consider two modelsrelevant either for some linearized theory of massive gravity or for thephysics of extra-dimensions. We use the latest observations from theCFHTLS-Wide survey and the SDSS survey to set our constraints. We do not findany deviation from general relativity on scales between 0.04 and 10 Mpc. Wederive constraints on the graviton mass in a restricted class of model.



Autor: O. Doré, M. Martig, Y. Mellier, M. Kilbinger, J. Benjamin, L. Fu, H. Hoekstra, M. Schultheis, E. Semboloni, I. Tereno

Fuente: https://arxiv.org/







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