Speaker
Description
Astrophysical jets are highly collimated outflows observed in a wide range of astronomical systems, from young stellar objects and X-ray binaries to active galactic nuclei (AGN). These jets are intimately linked to the accretion processes occurring around forming stars or supermassive black holes at the centers of galaxies. I will focus on the extragalactic case, where jets are accelerated to relativistic speeds. These structures span vast spatial scales, originating in the immediate vicinity of the central black hole and potentially extending over several megaparsecs. Their physics involve complex dynamics and non-linear processes, which are best investigated through numerical simulations. I will present the main results concerning their launching and collimation mechanisms, propagation, stability, and interaction with the surrounding medium. Finally, I will discuss methods for deriving realistic predictions of their radiative properties to enable meaningful comparisons with observations.
