Fig. 8.

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Structure of supra-arcade EUV emission in terms of temporal frequency. The power spectrum of any horizontal slice in the time-distance diagram (panel c of Figs. 2–5) is fitted with a power-law function. The spatial variation of the power-law index γt along each slit (panel a in Figs. 2–5) is shown in the left panels. The orange bars indicate the 1σ uncertainty estimates in the fittings. The power spectrum of the time-distance diagram collapsed along the distance axis is shown in the right panels.
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