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Fig. 11.

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Distribution of differential line fluxes normalised to the different extraction band widths at approximately 478.0 keV. Red data gives the result for the background region alone, while blue data corresponds to an extraction bin centred at 478.0 keV. The variation of the flux for different bin widths, with a maximum reached at about 8 keV, suggests that only for broad line widths, we obtain a significant signal for the line.

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