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This article has an erratum: [https://doi.org/10.1051/0004-6361/202040161e]


Fig. 13.

image

Top panel: real part of the Fourier coefficients with p = 0, 1, 2, 3, 4, and 12 as functions of the computational time for an angular sampling of the azimuthal component of velocity at r = R and z = 0 in the thin-layer case. The two vertical dashed lines correspond to the critical time of Browning & Priest (1984), tcrit = 40, and the onset time inferred from the integrated vorticity slope change, τKH = 66. The linear analytic result, where only the p = 0 mode is present, is overplotted for comparison. Bottom panel: same as top panel but for the radial component of velocity.

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