Main Colloquium
Prof. Franco Vazza	SCHEDULED

University of Bologna, Italy

The origin of magnetic fields measured out to several Megaparsec from the centre of clusters of galaxies is not obvious, and can either be ascribed to primordial, or astrophysical processes (or a combination of both). I will review the most updated results on the observational quests to detect magnetic fields on very large scales with radio telescopes, and show how the combination with modern cosmological simulations can suggest a plausible answer to the puzzle. I will also discuss the upcoming science which might become possible thanks to the advent of the Square Kilometre Array, and in combination with other powerful observational probes.