Coronal waves: propagation in the multi-fluid description

Philos Trans A Math Phys Eng Sci. 2006 Feb 15;364(1839):537-40. doi: 10.1098/rsta.2005.1716.

Abstract

We study wave propagation in the low-beta coronal plasma using a collisionless multi-fluid model. Neglecting the electron inertia, this model allows us to take into account ion-cyclotron wave effects that are absent in the magnetohydrodynamics model. To accomplish this, we perform a Fourier plane-wave perturbation analysis. Solving numerically the dispersion relations obtained from a two- and three-fluid model, dispersion curves for representative parameters of the solar corona are presented. The results reveal the presence of resonance frequencies that might play a role in coronal heating.