Snapshot at t_end of our Blandford & Payne simulation K2. Left: global view with field lines anchored on the disk at r_o = 3; 15; 40; 80; 160; 320; 600; 1000; 1500, where the background is the logarithm of the FM mach number n. Right: close-up view of the innermost regions, where the background is the logarithm of the density. In both panels, black solid lines are the poloidal magnetic surfaces, the yellow solid lines are isocontours of the poloidal electrical current, and the red dashed (resp. dotted) line is the FM (resp. Alfvén) critical surface.