Fig. 3.
Pre-explosion images in ZTF for SN 2020faa reveal no precursors in g band (green), r band (red), or i band (black). The flux f is given as a dimensionless ratio and can be converted via mAB = −2.5 log10(f). Filled data points are ≳5σ detections, whereas open points are not significant at the 5σ level. The data are binned in seven-day bins.
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