Fig. 3.

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Estimate of the explosion epoch for SN 2019cj. The ATLAS-o light curves of SN 2019cj (detections use red dot markers, limits use green diamond markers) are shown in flux space (expressed in μJy). The early light curves are fitted with a second-order polynomial, represented by a blue solid line. The blue shaded region around the fitted curve represents the 3-σ uncertainty in the fitting process.
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