Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/26510
Title: The unusual 2006 dwarf nova outburst of GK Persei
Authors: Evans, P. A.
Beardmore, A. P.
Osborne, J. P.
Wynn, G. A.
First Published: 1-Nov-2009
Publisher: Oxford University Press (OUP)
Royal Astronomical Society (RAS)
Citation: Monthly Notices of the Royal Astronomical Society, 2009, 399 (3), pp. 1167-1174
Abstract: The 2006 outburst of GK Persei differed significantly at optical and ultraviolet (UV) wavelengths from typical outbursts of this object. We present multiwavelength (X-ray, UV and optical) Swift and AAVSO data, giving unprecedented broad-band coverage of the outburst, allowing us to follow the evolution of the longer-than-normal 2006 outburst across these wavelengths. In the optical and UV we see a triple-peaked morphology with maximum brightness ∼1.5 mag lower than in previous years. In contrast, the peak hard X-ray flux is the same as in previous outbursts. We resolve this dichotomy by demonstrating that the hard X-ray flux only accounts for a small fraction of the total energy liberated during accretion, and interpret the optical/UV outburst profile as arising from a series of heating and cooling waves traversing the disc, caused by its variable density profile.
DOI Link: 10.1111/j.1365-2966.2009.15376.x
ISSN: 0035-8711
eISSN: 1365-2966
Links: http://hdl.handle.net/2381/26510
http://mnras.oxfordjournals.org/content/399/3/1167
Version: Publisher Version
Status: Peer-reviewed
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.
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2009 the authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Deposited with reference to the publisher’s archiving policy available on the SHERPA/RoMEO website.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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