Topolopy of the streamlines and magnetic fieldlines of the oscillating solution in the meridional plane. In a) zoom out showing the recollimation. In b) zoom close to the star. All distances are given in astronomical units (AU). The solid (red) lines correspond to open fieldlines connected to the star. The dashed (green) lines correspond to lines connected to the disk. The dead zone here is reduced and all lines from the star are opened and not connected to the accretion disk. The solution recollimates at 38 stellar radii at a distance where the UV shock was observed for RY Tau from 1993 to 2001. The dotted circle indicates the Alfvén surface.