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On waves in incompressible Hall magnetohydrodynamics

Belmont, Gérard; Sahraoui, Fouad; Galtier, Sébastien

Hall magnetohydrodynamics (HMHD) is a mono-fluid approximation extending the validity domain of the ordinary MHD system to spatial scales down to a fraction of the ion skin depth or frequencies comparable to the ion gyrofrequency. In the paper by Galtier (2006 J. Plasma Physics), an incompressible limit of the HMHD system is used for developing a …