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The Spin-Up Rate of the White Dwarf in GK Per

Published online by Cambridge University Press:  12 April 2016

Christopher W. Mauche
Christopher W. Mauche*
Affiliation:
Lawrence Livermore National Laboratory, L-473, 7000 East Avenue, Livermore, CA 94550

Abstract

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We use hard X-ray light curves measured by the Chandra HETG and RXTE PCA during the late rise and plateau phases of the 2002 March–April outburst of the intermediate polar GK Per to determine that its X-ray pulse period P = 351.332 ± 0.002 s. Combined with previous X-ray and optical measurements of the spin period of the white dwarf, we find that its spin-up rate Ṗ = 0.00027 ± 0.00005 s yr−1.

Type
Part 3. A. Accretion Plasma diagnostics - Observations
Information
International Astronomical Union Colloquium , Volume 190: Magnetic Cataclysmic Variables , 2004 , pp. 120 - 123
Copyright
Copyright © Astronomical Society of the Pacific 2004

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