Three-dimensional volume rendering of the number density during the interaction of the blast wave with the magnetized nebula at the labeled times for model MOD-B1. The density of the shocked plasma is in red and that of the unshocked equatorial ring material (with n ≥ 1000 cm⁻³) is in blue. The green lines are sampled magnetic field lines; the scale of the magnetic field strength is log and is the same as in Fig. 1 (see online Movie 1 for an animation of these data).