Magnetically warped discs in close binaries

Details Magnetically warped discs in close binaries Magnetically warped discs in close binaries

2002-04-30

arxiv.org/abs/astro-ph/0204518v1

Mon.Not.Roy.Astron.Soc. 335 (2002) 247

Astronomy and Astrophysics

Astrophysics

11 pages, 10 figures, MNRAS accepted

Scientific paper

10.1046/j.1365-8711.2002.05628.x

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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