Speaker
Description
The macroscopic structure and dynamics of relativistic AGN jets regulate where and how particles reach very high energies. Recollimation shocks—and the turbulent regions that form downstream—act as natural sites of localized dissipation and non-thermal particle acceleration. Using high-resolution 2D and 3D RMHD simulations with PLUTO, we examine how external confinement, jet–ambient pressure imbalance, and magnetic-field geometry shape the emergence of time-dependent features capable of energizing particles. The results link global jet dynamics to the spectral, polarization, and variability signatures observed in the very-high-energy (VHE) band, providing a physically consistent framework for interpreting high-energy-peaked blazars and underscoring the need for global jet modeling in VHE studies.
