View at the simulation box in the positive X-axis direction with the coordinates given in normalized (dimensionless) units. The distribution of plasma beta is shown in a vertical cutting plane through x = 10.9L₀ (1L₀ = 10⁷ m) (color coded as indicated). Above the colored region the plasma beta is larger than unity (colored in gray). Also shown is the vertical component of the magnetic field at the bottom of the simulation box and magnetic field lines colored by the corresponding value of the plasma beta. Again, gray corresponds to plasma beta over unity.