Top panels: distribution of toroidal magnetic field in vertical and horizontal slices through the disk centre for three models: S25 (left panel), S50 (middle panel), and S100 (right panel). Red represents regions with positive toroidal magnetic field, blue with negative, while unmagnetized regions are white. To enhance weaker magnetic field structures in the outer galactic disk (e.g., magnetic arms), the colour scale in the magnetic field maps is saturated. Bottom panels: face-on and edge-on polarization maps for selected time steps for three models: S25 (left panel), S50 (middle panel), and S100 (right panel). Polarized intensity (contours) and polarization angles (dashes) are superimposed onto the column density plots.