Accretion and jet simulations in YSOs .
Résumé
We have performed numerical simulations with the PLUTO numerical code starting from the analytical MHD model for RY Tau of Sauty et al. . We model the circumstellar corona with a stellar jet, surrounded by a magnetospheric accretion zone, an equatorial static dead zone and an external disk wind. The simulation attains a steady or quasi steady state in a few stellar rotations. Sporadic coronal mass ejections are present only if the mass accretion rate is much larger than the stellar mass loss rate.