The profile of (a) the electron number density n_e and (b) the parallel electron bulk flow velocity V e ∥ along the line at x = 22.5 d i parallel to the z axis for run 1 at Ω i 0 t = 21.25 (black solid lines), run 2 at Ω i 0 t = 19 (blue solid lines), run 3 at Ω i 0 t = 17.5 (green solid lines), and run 4 at Ω i 0 t = 16.5 (red solid lines). The black dashed line in panel (a) indicates the initial electron density in the inflow region n b = 0.2 n 0 . The black dashed line in panel (b) denotes the value V e ∥ / v A = 0 .