Magneto-Gravity Waves

Under the combined forces of magnetism and gravity the two modes again remain distinct. Gravity waves can propagate at frequencies less than ω_BV at small horizontal wavevector (essentially the Lorentz force opposes the transverse variation), and at frequencies greater than v_A²k_x² (Lou 1995). There are also a pair of upward- and downward- propagating waves at frequencies greater and less than ω_BV respectively.