by Atina Meli
(University of Liege)
The shock acceleration mechanism is invoked to explain non-thermal cosmic rays in Supernova Remnants, Active Galactic Nuclei and Gamma Ray Bursts jets. Especially, the importance of relativistic shock acceleration mechanism in extragalactic sources is a recurring theme raising a significant interest in the research community. I will overview the cosmic ray shock acceleration mechanism, and we will address the properties of non-relativistic and relativistic shocks in Active Galactic Nuclei jets, focusing on simulation studies.