Please use this identifier to cite or link to this item:
|Title:||The unusual 2006 dwarf nova outburst of GK Persei|
|Authors:||Evans, P. A.|
Beardmore, A. P.
Osborne, J. P.
Wynn, G. A.
|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.|
|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|
Files in This Item:
|MNRAS-2009-Evans-1167-74.pdf||Published (publisher PDF)||1.17 MB||Adobe PDF||View/Open|
Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.