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Multiple Time Scales in Cataclysmic Variables: The Examples

Published online by Cambridge University Press:  12 April 2016

Ivan L. Andronov
Ivan L. Andronov*
Affiliation:
Department of Astronomy, Odessa State University, T.G. Shevchenko Park, 270014 Odessa, Ukraine

Abstract

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Decades of patrol observations of cataclysmic variables (CVs) show variations of the accretion rate also at a time scale of a few years which may be explained by a solar-type activity of the secondary and/or by orientation changes of the magnetic axis of the white dwarf in polars. Secondary photometric periods seen in TT Ari and possibly some other CVs need theoretical explanation. Irregular variability of some objects is characterized by power-law power spectra with a power index depending on the luminosity state of the system.

Type
Cataclysmic Variables: Eruptions and Flickering
Information
International Astronomical Union Colloquium , Volume 151: Flares and Flashes , 1995 , pp. 302 - 305
Copyright
Copyright © Springer-Verlag 1995

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