Fig. 4.
Light curves of the UV monochromatic luminosity at 2500 Å (top panel), the X-ray monochromatic luminosity at 2 keV (middle panel), the αox parameter (bottom panel). Monochromatic luminosities are in units of erg s−1 Hz−1. Red diamonds describe the XMM-Newton observations. The diamond enclosed in a circle corresponds to the UFO detection. Blue points are related to the Swift observations.
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