S E M I N A R IDepartament d'Astronomia i Astrofísica
Universitat de València
Understanding extragalactic jets from theory and observations
Manel Perucho Pla
Departament d'Astronomia i Astrofísica, Universitat de València
Seminari del departament d'Astronomia i Astrofísca
Dijous 12 febrer 2009
I will review some aspects of my three years of research in the Max-Planck-Institut. These include modelling of extragalactic jets using numerical codes, stability theory and VLBI observations. In particular, I will report about a) results on evolution of components in the jet of the radio-galaxy 3C111 from the point of view of relativistic hydrodynamics, b) the observable effects of growing instabilities in jets as shown by detailed analysis of VLBI images of the jet in the quasar 0836+710, and c) I will present a new, fully parallelised, 3D relativistic hydrodynamics numerical code, along with the first results it has produced. These include the confirmation of the growth of resonant Kelvin-Helmholtz modes in sheared relativistic flows that can contribute to long term jet stabilization, as it was predicted from 2D simulations and KH stability theory.