Fig. 3.
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EPIC pn, background-subtracted light curves (Obs ID 0844101101) of both sources (IGR J17503-2636 on the left, IGR J17507-2647 on the right), extracted in two energy ranges (above and below 5 keV), together with their hardness ratios in the lowest panels. Vertical, dash-dotted red lines indicate the eight time intervals used to perform the time-selected spectroscopy (Table 6).
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