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Dwarf Nova Oscillations and Quasi-Periodic Oscillations: Extension of the Two-QPO Diagram of X-Ray Binaries, and a new kind of DNO

Published online by Cambridge University Press:  12 April 2016

Brian Warner  and
Patrick A. Woudt
Brian Warner
Affiliation:
Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa
Patrick A. Woudt
Affiliation:
Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa

Abstract

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Seventeen examples are given of Cataclysmic Variable (CV) stars possessing both Dwarf Nova Oscillations (DNOs) and Quasi-Periodic Oscillations (QPOs). These form an extension of the X-Ray Two-QPO correlation to frequencies three orders of magnitude lower. We draw attention to the existence of a second type of DNO in CVs, which is probably caused by magnetically channelled accretion onto the white dwarf.

Type
Part 2. Magnetic Fields
Information
International Astronomical Union Colloquium , Volume 190: Magnetic Cataclysmic Variables , 2004 , pp. 85 - 90
Copyright
Copyright © Astronomical Society of the Pacific 2004

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