Fig. 4.

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Exponential rise and decay time of the characteristic flare shape. Left: principal component derived from the Spitzer data. The light red lines show the first components derived from 100 bootstrapped flare data sets. The black line shows the best fit exponential rise and decay. The uncertainty denoted in the figure legend is derived from the standard deviation of the τ value in the bootstrap samples. Right: same but for the Chandra X-ray data.
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