Fig. 1

Left: XIS 0 (upper, with small circles) and HXD/PIN (lower) (all background subtracted) light curves in the 0.5−10 keV or 15−55 keV energy range, respectively. Right: XIS 0 light curves in two different energy bands, 0.5−3 keV and 3−10 keV (all background-subtracted), and the hardness ratio between the hard and the soft bands. The gaps between the observations are shrunk for clarity. The time bin size is 2880 s.
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