Let's simulate magnetic reconnection (re-connection of magnetic field lines). This magnetic reconnection is considered to take place in solar flare etc.

[Initial Condition]

Unti-parallel magnetic fields are placed in both sides with the boundary at x=0 and magnetic diffusion takes place at the region near (x,y)=(0,0).

In the figure, color shows density, arrows show velocity, and lines show magnetic field lines. Color coding of the density is in logarithmic scale.

[Evolved Stage]

In the magnetic diffusion area, magnetic reconnectiontakes place and a clump of plasma moves upward violently with shock wave.