Colafrancesco, SergioSergioColafrancesco2020-09-172020-09-172008-01-01https://hdl.handle.net/20.500.13025/1189Memorie della Societ Astronomica Italiana, v.79, p.213 (2008)We discuss the relevance of Hard X-ray observations of Large Scale Structures in the universe, and especially of galaxy clusters, to unveil several issues that are relevant for Cosmology and Astro-Particle Physics of cosmic structures the nature of Dark Matter, the origin of cosmic rays, the role of magnetic fields and the impact of black holes.galaxies clusters Cosmology astro-particle physicshttp://adsabs.harvard.edu/abs/2008MmSAI..79..213C2008MmSAI..79..213C