The dispersive properties of cold magnetized plasmas, including the low-frequency Alfvénic mode as well as high-frequency magnetoionic modes, are investigated. The wave dispersion relations, polarizations, and group speed properties are quantitatively discussed by way of systematic derivation of the dispersion surfaces, longitudinal and transverse parameters that determine the polarization characteristics, and the parameter that determines the magnitude of the radial group velocity. The formulae derived in the present paper may find their applications in a variety of situations, but one particular example may be the plasma waves and particle accelerations taking place in the strongly magnetized plasma environment in the low-altitude auroral zones of the giant planet Jupiter.
Yoon et al. (Sun,) studied this question.