Fig. 1.
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Light curve of 2S 1417–624 at 15−50 keV, as observed by Swift/BAT during the 2018 and 2021 outbursts. Upper panel: Total of 29 pointing observations conducted by Insight-HXMT in 2018, as indicated by the red points with the flux in the 2−140 keV energy band. Bottom panel: Vertical black lines indicating the Insight-HXMT observations in 2021. Table A.1 provides details of the observational information.
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