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Title: Swift observations of the X-ray and UV evolution of V2491 Cyg (Nova Cyg 2008 No. 2)
Authors: Page, K. L.
Osborne, J. P.
Evans, P. A.
Beardmore, A. P.
Starling, R. L. C.
Wynn, G. A.
Bode, M. F.
Ibarra, A.
Ness, J-U.
Kuulkers, E.
Schwarz, G. J.
First Published: 1-Jan-2010
Publisher: Oxford University Press
Citation: Monthly Notices of the Royal Astronomical Society, 2010, 401 (1), pp. 121-130
Abstract: 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.
DOI Link: 10.1111/j.1365-2966.2009.15681.x
ISSN: 0035-8711
eISSN: 1365-2966
Version: Publisher Version
Type: Journal Article
Rights: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2009 The Authors. Journal compilation © 2009 RAS. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Deposited with reference to the publisher’s open access archiving policy.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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