Fig. 4.From: Ballooning modes and their stability in a near-Earth plasmaThe squared local radial wave number (normalized by a) for various (upper panel). The discrete spectrum comprises 3 eigenvalues , and . Their eigenfunctions ξ n (r) are shown in the bottom panel. The parameters used are β0 = 0.95, P∞/P0 = 1, a/r0 = 1/6, v = 0.5, and k y a = 2.Back to article page