Jet dynamics and emission

Numerical relativistic hydrodynamical simulations have been recently used to study the dynamics of relativistic jets in active galactic nuclei and microquasars. Computation of the non-thermal emission from this hydrodynamical models have allowed a direct comparison with recent high resolution observations of these sources, revealing the important role this method can play in the understanding of the physical processes taking place in these sources. This paper reviews some of the latest results in numerical relativistic hydrodynamical and emission simulations of jets. Recent observations are also analyzed on the light of these simulations.