Slices through midplane perpendicular to the orbital plane of the binary, centered on the NS before and after the formation of the polar outflows. The first column shows the radial velocity of the gas as a fraction of the speed of light, (v_r/c). The second column shows the entropy of the gas. The third column shows the magnetic-to-fluid pressure ratio, p_b/p_f. The fourth column shows the absolute magnitude of the magnetic field in the gas.