Ponente
Descripción
The striking discovery that the Cosmic expansion is accelerating has turned into one of the puzzles in Cosmology sparking large observational campaigns to map the geometry and the large-scale structure of the Universe across cosmic time. I will review this effort and then discuss The Dark Energy Survey (DES), a state-of-the-art galaxy survey designed to map the positions and shapes for 300 million galaxies up to redshift >~ 1 over 5000 deg2, the light-curves of several thousand supernovae, and the masses of tens of thousands of galaxy clusters. I will present the cosmological analysis from the first year of data, mainly from the combination of clustering and weak gravitational lensing, putting them in context with those from other current and future survey datasets.
