Fig. 3
Left: time derivative of a section of flare 152 observed by EVE/ESP. Right: the corresponding power spectrum, where the red solid line is a broken power law fit to the spectrum, the red dotted line represents the 95% confidence level, and the red dashed line the 99% level. One peak is above the 95% level, at a period of 27.3 ± 0.9 s.
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