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The March 2011 outburst of the poorly-studied cataclysmic variable NSV 1436offered an opportunity to decide between dwarf nova and recurrent novaclassifications. We use seven daily observations in the X-ray and UV by theSwift satellite, together with AAVSO V photometry, to characterise the outburstand decline behaviour. The short optical outburst coincided with a faint andrelatively soft X-ray state, whereas in decline to fainter optical magnitudesthe X-ray source was harder and brighter. These attributes, and the modestoptical outburst amplitude, indicate that this was a dwarf nova outburst andnot a recurrent nova. The rapid optical fading suggests an orbital period below2 hours.

Swift observations of the March 2011 outburst of the cataclysmic variable NSV 1436: a probable dwarf nova (Research Note)