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We present extensive, high‐density  Swift  observations of V2491 Cyg (Nova Cyg 2008 No. 2). Observing the X‐ray emission from only one day after the nova discovery, the source is followed through the initial brightening, the super‐soft source phase and back to the pre‐outburst flux level. The evolution of the spectrum throughout the outburst is demonstrated. The UV and X‐ray light curves follow very different paths, although changes occur in them around the same times, indicating a link between the bands. Flickering in the late‐time X‐ray data indicates the resumption of accretion. We show that if the white dwarf (WD) is magnetic, it would be among the most magnetic known; the lack of a periodic signal in our later data argues against a magnetic WD, however. We also discuss the possibility that V2491 Cyg is a recurrent nova, providing recurrence time‐scale estimates.

Swift observations of the X‐ray and UV evolution of V2491 Cyg (Nova Cyg 2008 No. 2)