Perturbation of a wave field by an irregularity in a magneto-plasma

The present work considers the problem of the perturbation of the wave field recorded by a satellite such as GEOS when there is a region of nonuniformity around the satellite such that the Debye length exceeds the lengths of the aerials or booms. An idealized model is constructed in order to study the qualitative effects of such an irregularity on an incident wave field. Electromagnetic radiation propagates through a cold magneto-plasma and falls upon an irregularity in the form of an ellipsoid of different density whose axis is parallel to the unperturbed magnetic field. This idealization is treated in quasi-static approximation in spheroidal coordinates. The results show that the wave field is perturbed in both amplitude and phase within the irregularity and its neighborhood.