Fig. 3
Cumulative Δχ2 distributions of the 2L1S (solid curve) and 1L2S (dashed curve) models with respect to the 1L1S model. The observed light curve is shown in the upper panel to see the locations around which the fit improves. The zoomed-in view of the 2L1S and 1L2S distributions in the region of 8373.0 ≲HJD′≲ 8374.2 is shown in the inset of the lower panel. The times denoted by t1 and t2 corresponds to the times of the two bumps denoted in Fig. 2.
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