Visualizations of A → FMS mode conversion simulation AW032pi at t = 5.0 [R_NS/c]. Top two rows are 2D visualizations of the toroidal ideal electric field E^ϕ, indicating the FMS wave (top left); the toroidal magnetic field B^ϕ, indicating the A waves (middle left); the Lorentz factor Γ (top right); and the fluid temperature T (middle right). Contours of poloidal magnetic flux are plotted as white solid lines; the contours are linearly spaced. Green contours are drawn showing the magnetic field lines anchored at the edge of the twist. Bottom row shows 1D profiles of a monster shock forming on the equator (z/R_NS = 0). The electromagnetic field components B^θ and E^ϕ of the generated FMS wave are shown on the left, and the radial four-velocity on the right.