Eigenfunctions in the presence of gravity and magnetic field associated to the C ₋  solution (top panel) and the C ₊  solution (bottom panel). The continuous line correspond s to λ = 2  ×  10⁴   km, the dotted line to λ = 6  ×  10³   km, while for the dash-dotted curve λ = 2  ×  10³   km. In this plot R = 10²   km, ρ_p = 100ρ_c and v_Ap = 100   km   s^-1. The dashed lines represent the slab boundaries.