Figure 5: Time evolution of our 3D model  visualized by mass shell trajectories in thin gray lines (left panel). Thick red lines show the position of shock waves, noting that the maximum (top), average (middle), and the minimum (bottom) shock position are shown, respectively. The green line represents the shock position of the 1D model. “1.30” and “1.40” indicate the mass in unit of enclosed inside the mass-shell. Right panel shows the evolution of average shock radii for the 2D (green line) and 3D (red line) models. The “3D low” (pink line) corresponds to the low resolution 3D model, in which the mesh numbers are taken to be half of the standard model (see text). These figures are taken from .