Flux histories detected with BATSE in the energy bands 100–200 keV (left panel) and 200–300 keV (right panel). The data is from Ling & Wheaton (2003). The plateau phase is the period of  ~15 days between TJD  ~ 8 845 and TJD  ~ 8 860. Lines (b) and (c) correspond to TJD 8 848 and 8 855, respectively, where the two first maxima at E < 200 keV were detected; in an analogous way, lines (a) and (d) correspond to TJD 8 843 and 8 862, where the two first maxima at E > 200 keV were detected.