Spatial distribution of strong magnetic disturbances and currents. Top panel: volume rendering of δB/B₀ (orange), shown only for values above unity, and the current density normalized by its rms value (purple), shown only for values above the critical for each model. Bottom panel: zoomed-in view of the central 6 kpc of each run, showing a midplane cut of the current density, in code units. Here the colorbar range has been limited to the highest J values. The time corresponding to these snapshots is 500 Myr.