Color density maps of the outflow-medium interaction structure after (from left to right, and top to bottom) t ≈ 0, 5, 10; 15, 20, 25; 30, 35, 40; 45, 50 t_acc. The bottom right density map corresponds to the case without outflow after t ≈ 50 t_acc. The arrows illustrate the accreted gas trajectories. The injector-accretor region is located at (0, 0). The axis scales are normalized to r_acc, and the color scale is normalized to the medium density. The medium motion in the PBH reference frame is upwards.