A model for the high-energy emission from blazars

REYNOSO, MATÍAS M.; ROMERO, GUSTAVO E.; MEDINA, MARÍA C.; BRUN, PIERRE

Barcelona

Conferencia; High Energy Phenomena in Relativistic Outflows III (HEPRO III); 2011

Universitat de Barcelona

We study the production of VHE emission in blazars as a superposition of a steady a component from a baryonic jet, and a time-dependent contribution from an inner e− e+ beam launched by the black hole. Both primary electrons and protons are injected near the base of the jet, and the particle distributions along it are found solving a stationary one-dimensional transport equation accounting for convection and cooling. The short-timescale variability of the emission is explained by perturbations introducedby Kelvin-Helmholtz (KH) instabilities and their interaction with relativistic shocks. For illustration purposes, we apply the model to the case of PKS 2155-304.