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Fig. 4


Period, damping time, and ratio of the damping time to period versus the wavenumber for the long (solid) and short (dashed) period Alfvén waves in a FIRP (). The location of the critical wavenumbers is defined by the presence of peaks and bifurcations in the plots. The background flow speed is 15 km s-1 and the shaded region corresponds to the interval of observed wavelengths in prominence oscillations.

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