Prof. Stefano Borgani

Department of Physics, University of Trieste and INAF – Astronomical Observatory of Trieste, Italy

POZOR, Astrodebata ODPADE

I will discuss the role that cosmological tests based on measurements of the growth rate of density perturbations have in constraining the nature of dark matter and dark energy, as well as the nature of gravity. After reviewing the basic concepts on the evolution of density perturbations, I will highlight how such predictions are altered by modifying gravity. Furthermore I will discuss how neutrino masses can be inferred from cosmological observations, through the effect that massive neutrinos have on the growth rate of perturbations. Galaxy clustering, weak lensing and clusters of galaxies will be discussed as tracers of growth of density perturbations.

Finally I will discuss the role that future large galaxy surveys, like that to be provided by the Euclid satellite, will have in shedding light on the dark sector of the Universe.