Fig. 5.
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Top panel: light curve of the type-I X-ray burst number 4 (see Fig. 4) observed by EPIC-pn (0.3–10 keV, black dots) and NuSTAR (3–79 keV, blue dots). The unabsorbed flux is traced in the panel below in units of 10−8 erg cm−2 s−1 (0.01–15 keV). The burst onset took place at MJD 60368.49178. The temperature and the apparent radius (for a source distance of 8 kpc) of the blackbody component are plotted in the two bottom panels.
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