The physics of AGN jets from 3D simulations

Titolo: The physics of AGN jets from 3D simulations 

Relatore: Salvo Cielo, IAP, Paris, France 

Abstract: Among the different feedback mechanisms that AGN provide to their host galaxies and clusters, relativistic, collimated jets show a very rich physics. The interaction of such jets with the hot gas present in galaxy groups or clusters up to Megaparsec scales may explain several well-observed but complex features such as creations of bow-shocks fronts, complex sound waves structures, fast secondary winds, inflation of X-ray cavities (often seen in multiple pairs).
Another important question concerns whether the jets may couple efficiently to the host (mainly because of the jets' high directionality), thus being energetically relevant for galaxy groups and clusters.
We explore this physics by running a series of high-resolution 3D numerical simulations of the jet/hot gas interaction, including also multiple (non-coplanar) jet events. Such simulations offer good insight on the energetics of jet feedback and may capture the observed complex structures, as it is visible from animated flow maps and synthetic x-ray images produced from the simulation output. 

Coordinate: giovedì 12 novembre 2015, ore 11:30, Osservatorio Astrofisico di Catania, aula Ovest