Fig. 5
UVOT/uvm2 light curve (upper panel) extracted with an aperture (radius = 6 arcsec) centred on the dwarf nova CP Draconis (NGC 3147-O1). The time zero is set to MET = 409627840 s (2013-12-25). The fit with a constant function provides a χ2 = 3685 (25 d.o.f.), and a null probability. The X-ray counterpart to this source (lower panel) does not show any significant variability, as the fit with a constant function returns a χ2 = 6.426 (4 d.o.f.) and a probability p = 0.1695.
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