Comparison of runs IMHD (first row) and NIMHD (second row) at the scale of the dense cloud core itself. The snapshots are taken respectively at t ≈ 23.25 and t ≈ 23.39 kyr following the collapse of the dense core. The first column displays column density (panels a and b), the second column displays the optical depth computed along the line of sight (panels c and d), and the last column displays the maximum temperature along the line of sight (panels e and f). All maps are projections along the z-axis. The green contour in panels (c) and (d) represent an optical depth of unity. The scale bars in the first column apply to the other columns as well.