Fig. 4.
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GRB 221009A 200 − 1200 keV PICsIT light curve. The power-law best-fit slope to the data from T0 + 600 − 900 s has a slope of 3.91 and is shown in green. The best-fit to the data from T0 + 630 − 900 s gives an index of 1.6, which is shown as the red line. The blue dashed line is the power-law best-fit slope from An et al. (2023) for T0 + 600 − 900 in the 600 − 3000 keV energy range and has a slope of 0.88.
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