Fig. 9

Comparison of the X-ray light curves with the simultaneous BRITE photometry in April 2015 (combined light curve from the two BRITE filters, for details see Ramiaramanantsoa et al. 2018), and December 2016–April 2017 (only one satellite, BRITE-Lem, in the blue filter, see Ramiaramanantsoa et al. 2018, andin prep.). For Swift, fluxes from the spectral fits (Table 4) are used since they are more reliable.
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