Large-Scale 3D Simulations of Protostellar Jets

Results of three-dimensional time-dependent magneto-hydrodynamic simulations of T Tauri jets, launched magneto-centrifugally from the surface of Keplerian disk is presented. We extend the calculations to scales probed by HST (50 AU) thereby allowing a direct comparison between simulations and observations. We explore the effects of different initial magnetic field configurations on evolution and stability of these jets and focus on comparing the generated (poloidal and azimuthal) velocity profile maps with observed velocity structures.