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Fig. 1.

image

Light curves of PSR J1048+2339 companion star with the SDSS r′ and g′ band filter between 2018 March 11 and April 23, folded with an orbital period of 6 h and T0 = MJD 56637.598177. While the pulsar wind heating and ellipsoidal variation are clearly seen in both bands, the magnitude in the g′ band has larger variation compared to that of the r′ band. An orbital phase of 0.25 corresponds to the inferior conjunction of the companion star.

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