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Electron cyclotron (EC) waves are studied in the Saturn’s magnetosphere. The method use of kinetic approach has been adopted toevaluate the dispersion relation, growth rate of the waves. We show the wave frequency is near the gyro frequency of the electron cyclotron wave they are right hand circularly polarized. The present study of the investigation is to examine the effect of parallel electric field (EII) in view of the observations in Saturn magnetosphere has been applied by Cassini. It is observed that the effect of increasing the Saturn’s radii (Rs) with parallel electric field is to decrease the growth/damping rate of the EC waves. The results are interpreted for the space plasma parameters appropriate to the Cassini of the Saturn’s magnetosphere plasma. [ABSTRACT FROM AUTHOR]

We have, present work on kinetic Alfven waves instability in dusty plasma. The expression for the dispersion relation, growth rate and growth length of the kinetic Alfven waves are derived using the particle aspect analysis in auroral acceleration region. Our purpose in this paper is to be investigating the effect of kappa distribution function with dusty plasma on kinetic Alfven waves. The results of the work are consistent for Alfven wave in dusty plasma are applicable of the magnetospheric and astrophysical in auroral acceleration region. [ABSTRACT FROM AUTHOR]