Spatial distributions of the residual azimuthal velocity δv_ϕ = (v_ϕ − v_K)∕v_K (top panels) and the ratio of radial to Keplerian velocity δv_r = v_r∕v_K (bottom panels) in the collision models. Left and right columns: peaks of Collision4 and Collision5 bursts (see the second row in Figs. 11 and 12). The black arrows point to the position of the intruder. The intersection of the dashed black lines marks the position of the target star. The disk rotates counterclockwise.