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Agnès Ferté

Agnès Ferté

Weak gravitational lensing is a powerful probe of the matter distribution in the recent Universe and thus a key probe for dark energy and gravity. I will give a status of weak lensing cosmology in ΛCDM and tests of gravity, putting the results we obtained in arxiv:2207.05766 into perspective and highlighting the current slight tensions in S8 and ∑0 with the Cosmic Microwave Background. I will then discuss ongoing progress and outlooks to complete our understanding of such tensions in the experimental landscape of the coming decade. Finally, I will show how the method we proposed in arxiv:2110.13171 can be used for the purpose of exploring solutions to the S8 tension. I will end by showing a preliminary version of an online page to centralize cosmological results and thus facilitate the visualization of cosmological tensions.