Speaker
Isaac Tutusaus
(IRAP-OMP)
Description
In this talk I will present a new methodology to measure the Weyl potential, which is the sum of the spatial and temporal distortions of the Universe's geometry, in a model independent way. I will then present how combining galaxy clustering and galaxy-galaxy lensing data from DES Y3 we can provide the first direct measurement of the evolution of the Weyl potential at four different redshifts. I will end by showing the forecast precision of such measurements with stage IV surveys and the interest of combining these with data coming from spectroscopic galaxy surveys.
Primary author
Isaac Tutusaus
(IRAP-OMP)
