Speaker
Description
The statistical analysis of lensed galaxies is a powerful tool to study the dark matter distribution of the Universe. For instance, the distortion of galaxy shapes induced by the large scale structure of the Universe can be used to reconstruct the projected matter density along the line-of-sight (mass maps). Mass maps are useful as they provide a wealth of information that goes beyond and complements the more traditional two-point statistics used in Cosmology. The data from the first three years of observations of the Dark Energy Survey (DES Y3) will allow to construct the largest curved-sky galaxy weak lensing mass map to date, covering about 5000 sq. deg of the southern sky. During this talk, we will show preliminary DES Y3 mass maps and explore the possibility of constraining cosmological parameters using the second and third moments of the mass maps.