Fig. 4

Comparison of frequency spacings δn,ℓ between island modes, computed from numerical simulations and semi-analytical formulas for different values of Ω/ΩK (the frequency spacings are normalized by with Rp the polar radius). Circles: δn, triangles: δℓ, orange/gray: semi-analytical results, blue/black: numerical results. Numerical results correspond to different sets of
and
values, with n ∈ [42,51] , ℓ ∈ { 0,1 } for m = 0; and n ∈ [42,51] , ℓ = 0, n ∈ { 42,44,46,48,50 } , ℓ = 1 for m ∈ { − 1,1 } . Upper panel: m = 0. Lower panel: m = ± 1. (This figure is available in color in the electronic form.)
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