Figure 1. (a) Magnetosheath ion trajectories (dashed curves) and magnetospheric ion orbits (solid curves) at the boundary between two mediums in the equatorial plane for antiparallel magnetic fields; (b) Currents resulting at the boundary between two mediums in the equatorial plane for antiparallel magnetic fields. The parts of orbits of the magnetosheath (magnetospheric) ions that penetrated the outer space are shown by dashed (solid) curves.