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Fig. 9.
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Hardness ratio of the fluxes in 15−50 keV and 5−10 keV ranges in 2S 1417–624 as a function of the 2−140 keV range flux. The dashed lines indicate the two flux levels where the profile shape changes. The red and black points indicate the observations during the 2018 and 2021 outbursts, respectively.
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