Normal modes of oscillation in a higher-order Chew—Goldberger—Low plasma

The low frequency, linear oscifiation of an unbounded, homogeneous, low density plasma in the presence of a strong, uniform magnetic field is examined using a set of three-dimensional hydromagnetic equations derived from the higher-order Chew—Goldberger—Low theory recently obtained by Frieman, Davidson & Langdon (1966). It is found from the higher-order corrections to the dispersion relation that the waves are generally dispersed and the mirror and firehose instabilities are stabilized.