Application of generalized Lorentzian (kappa) distribution function in propagation of electron cyclotron waves in magnetospheric plasma of an outer planet

Abstract

For the study of propagation of electron cyclotron waves in magnetospheric plasma of an outer planet, generally two distributions: (i) Bi-Maxwellian distribution, and (ii) Generalized Lorentzian (kappa) distribution, along with temperature anisotropy, have been in use. It is also argued that most natural space plasmas possess the continuous presence of non-Maxwellian high energy tail component which can best be modeled by the generalized Lorentzian (kappa) distribution function. Therefore, this distribution function has been used in many investigations. We have looked into some investigations where this distribution function is used, and our findings are discussed in this communication.