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Fig. 2.

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XRT (0.2–10 keV) light curves during the events: RS Oph 2006 and 2021 (Page et al. 2022), V745 Sco 2014 (Page et al. 2015), V3890 Sgr 2019 (Page et al. 2020), V407 Cyg 2010. A constant scaling factor is applied, of 10 for V745 Sco and V3890 Sgr, 3 × 103 to V407 Cyg.
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