GENERATION OF PLASMA PERTURBATIONS UNDER COLLISIONLESS INTERACTION OF SUPER–ALFVÉNIC FLOWS

Generation of plasma perturbations because of collisionless super–Alfvénic dense plasma clouds expanding through and decelerating in an ambient plasma background is studied. Using an universal hybrid kinetic-hydrodynamical description, the calculations are made for a 2D and 3D expansion of a spherical cloud into an initially uniform background with uniform magnetic field.