Magnetohydrodynamic (MHD) Waves in Plasmas

Abstract

The model for a magnetoplasma is given by the MHD equations, so the first aim is to give a full list of MHD equations, with the criteria of their applicability for wave propagation. The validity conditions under which the MHD equations are used require the wave frequency to be,  and the seven eigenvectors are obtained. In MHD, the magnetic fields are frozen into the fluid and are elastic; displacing fluid elements causes magnetic restoring forces to switch on. This action appears as distorted magnetic field lines due to torsional and compressional Alfve’n waves.