Top panel: Azimuthal velocity, v_ϕ, as a function of cylindrical radius, R_cylinder, at different points in time corresponding to the snapshots in Figure 4. Bottom panel: Mass exterior to R_cylinder. At t = 0, there is no rotation other than the orbital motion of the hot Jupiter itself, which is shown as a flat red line at the Keplerian velocity, 216 km s⁻¹. The inward movement of the hot Jupiter is shown by the spike. In the last simulation snapshot, the outermost ≈ 10⁻³ M_⊙ of material rotates at a few times 10 km s⁻¹.