Snapshot of our MHD simulation. Top panel: system seen edge-on. The color scale and white contours represent the gas column density. The yellow streamlines trace the orientation of the density-weighted average magnetic field along the line of sight. The white arrows represent the velocity field in a slice of the simulation centered on the sink particle. Bottom panel: the contours and white arrows are the same as in the top panel. The color scale represents a slice of gas mass density, centered on the sink particle. In both panels, the little white circle is the full width half maximum of a circular Gaussian kernel we use to slightly smooth the highest resolution of the AMR grid, for visibility.