Visibility integrals versus θ/π. The functions ck with k = 1,2 are defined in Sect. 2.3. The considered ranges of ϕ and θ correspond to the hemisphere visible for the observer at i = 25 degrees. Shown are the results for a (100) and (200) axisymmetric g-mode in the upper panels and a (211) and (312) r-mode in the lower panels.
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