Fig. 2.

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NuSTAR and XMM-Newton folded light curve using 48 phase bins, an orbital period of 13.713 days, and with 56498.7 MJD as the reference epoch (Corbet et al. 2019). A sine function fit is shown in orange (see the main text for details). The observed orbital modulation is similar to that shown by Corbet et al. (2019) using Swift/XRT data.
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