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Fig. 9

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Optical and X-ray light curve of RX J0520.5-6932. Top panel: Swift/XRT count rates (0.3–10 keV band), 2σ upper limits are plotted with arrows. The vertical black dotted lines represent the 24.43 d optical period phased on the detected X-ray maximum, while the red dashed lines are spaced based on the 23.93 d orbital solution of Kuehnel et al. (2014; phased at the mean T90 time). Bottom panel: OGLE-IV I band optical light curve.

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