Slices showing the ambipolar (first column, panels a and c) and Ohmic (second column, panels b and d) Elsässer numbers within the star-disk system in the final snapshot of run NIMHD (t ≈ 0.55 yr after protostellar birth). The first row (panels a and b) displays slices in a top-down view, whereas the second row (panels c and d) displays edge-on views. The colorbar on the left applies to panels (a) and (c); the colorbar on the right applies to panels (b) and (d). The outer contour corresponds to the disk surface, whereas the inner one corresponds to the protostar’s surface (see Appendix A for an overview of each object’s definition).