Fig. 3
XMM-Newton/EPIC background-subtracted X-ray light curves of EX Lup. The top panel shows the EPIC (pn+MOS1+MOS2) X-ray light curve of EX Lup in the energy band from 0.2 to 7.3 keV. The middle panels show the soft (S = 0.2−1.7 keV) and hard (H = 1.7−7.3 keV) band X-ray light curves. The bin size of the X-ray light curves is 1500 s. The bottom panel shows the variation of the corresponding hardness ratio. The vertical dashed lines bracket the source flaring period.
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