Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 335, Issue 2, Pages 247-255Publisher
OXFORD UNIV PRESS
DOI: 10.1046/j.1365-8711.2002.05628.x
Keywords
accretion, accretion discs; hydrodynamics; instabilities; methods : numerical; binaries : close; novae, cataclysmic variables
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We demonstrate that measurable vertical structure can be excited in the accretion disc of a close binary system by a dipolar magnetic field centred on the secondary star. We present the first high-resolution hydrodynamic simulations to show the initial development of a uniform warp in a tidally truncated accretion disc. The warp precesses retrogradely with respect to the inertial frame. The amplitude depends on the phase of the warp with respect to the binary frame. A warped disc is the best available explanation for negative superhumps.
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