Magnetic Cusp as a Source of Dust Swarms in the Near-Earth Space

Within the framework of the concept of steady-state flow of a flux of dust particles through the cusp channel of the Earth's magnetosphere, we develop the idea that the magnetic cusp is a generator of dust swarms in the near-Earth space. The analytical dependencies for the density (concentration) of dust particles in the cusp and near-Earth space region are obtained.     

Dust Plasma Dynamics in the Geomagnetic Tail

The results of numerical modeling of dust plasma dynamics in the geomagnetic tail are presented for the southward and northward orientations of the interplanetary magnetic field in the model with reconnection of magnetic field lines of geomagnetic and interplanetary magnetic fields. It is shown that in reconnection regions the compression shock waves arise, at the fronts of which the dust plasma fluxes with higher-than-background density are generated.