A PLASMA β TRANSITION WITHIN A PROPAGATING FLUX ROPE
A PLASMA β TRANSITION WITHIN A PROPAGATING FLUX ROPE
We present a 2.5 dimensional magnetohydrodynamic simulation of a magnetic flux rope (FR) propagating in the heliosphere and investigate the cause of the observed sharp plasma β transition. Specifically, we consider a strong internal magnetic field and an explosive fast start, such that the plasma β is significantly lower in …