Sommaire:

In this talk, I will first describe our approach to test gravity with the Dark Energy Survey weak lensing and clustering measurements. Weak gravitational lensing is indeed a powerful probe of the laws of gravity on cosmological scales and its measurements by galaxy surveys such as Euclid or LSST will enable an even deeper search of modified gravity. In the second part of this talk, I will present a new approach I proposed to classify modified gravity theories using unsupervised learning in order to efficiently test gravity with these future surveys. I will show preliminary results and conclude on the outlooks for the future surveys of the 2020 decade.

Pour plus d'informations, merci de contacter Lavalle J.