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Fig. 12.

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Long-term light curves of J1109 in the X-ray bands. Top panel: over the 0.3–10 keV energy range, obtained from data with different observatories in the time interval from 1991 January 18 to 2018 June 21. Bottom panel: over the 15–150 keV energy range, obtained from data with the Swift BAT in the time interval from 2004 December 8 to 2017 October 1 with a time bin of 360 d.

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