Low frequency global modes in inhomogeneous non-Maxwellian plasmas

Summary form only given. The effect of superthermal electrons obeying kappa/Cairn´s distribution on low frequency electrostatic global modes is studied. The plasma is considered inhomogeneous and the effect of arbitrary size density gradients alongwith non-Maxwellian effects is discussed analytically on the growth or damping of the drift/cyclotron frequencies. The general solution of the bounded non-Maxwellian plasma and the corresponding eigen frequencies for the low frequency modes is obtained. It is noticed that the global mode frequency reduced in the presence of superthermal particles in the tail of the electrons distribution. This investigation can be useful for further understanding of space plasmas.