Fig. 2
Upper panel: PCA (2–12 keV) lightcurve of IGR J17473–2721 with a time bin of 16 s, in which the spikes are type-I X-ray bursts. The color bar above the PCA lightcurve indicates the burst groups for the subsequent analysis of the relationship between the burst duration and the corresponding persistent flux. Middle panel: the BAT (15–50 keV) lightcurve of IGR J17473–2721 (black) and GRO J1750 − 27 (red) during the outburst in 2008. Lower panel: the ISGRI (20–200 keV) lightcurves of both sources monitored by INTEGRAL. In both of the lower panels the bin size is one day.
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