Fig. 4
XMM-Newton/EPIC pn spectrum of the 2011 March 30 flare. The data are denoted by crosses. The vertical bars is the 1σ error in the count rate and horizontal bars show the spectral bin in energy. The events have been grouped with a minimum signal-to-noise ratio of 4. Top: the result of the fit is shown by the continuous solid line. Bottom: the χ2 residual in units of σ.
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