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This article has an erratum: [https://doi.org/10.1051/0004-6361/201630355e]


Fig. 2

image

Phase speed ω/ωsi for the slow surface mode (ss) versus kzR. We compare the numerical results (Eq. (10)) with those by using the analytical formulas α (Eq. (17)) and β (Eq. (18)). The α and β are indistinguishable in the figure. The parameters are the same as in the previous figure.

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