Structure of MR-SNe with a bipolar-jet explosion around the PNS. The entropy per baryon (3–15 ﹩{k}_{{\rm{B}}}\;{\mathrm{baryon}}^{-1}﹩) and magnetic field lines (white lines) are drawn in the spatial range of 700 km. The left and right panels correspond to B12 ﹩\beta ﹩ 1.00 (prompt-jet model) and B11 ﹩\beta ﹩ 0.25 (delayed-jet model), respectively.