Resulting optical depth maps of setup MHD_sim1 (left column) in comparison with setup MHD_sim2 (right column) at three distinct wavelengths. The vectors of linear polarization have an offset angle of 90° to match the projected magnetic field. We adjust the color bars of the optical depth with an upper cut-off at 15% for illustrative purposes. The transition between optically thin and optically thick regions is indicated by the green contour lines and a marker in the color bar.