Maps of the density isocontours in the equatorial plane XY (bottom row), and polar plane XZ (top row). The model is GRB-HS100 and its parameters are β = 100 and a = 0.9. The color maps are in logarithmic scale and are taken at the three times of the simulation, at t = 20 000 M, t = 25 000 M, and t = 30 000 M. Streamlines show the magnetic three-vector configuration. We show the equatorial cuts of a small region of 10 r_g from the black hole (bottom panels) and the polar cuts are shown for small and large regions, up to 100 r_g (upper panels).