Magnetic spin-orbit coupling and mass transfer rates in the polars

Details Magnetic spin-orbit coupling and mass transfer rates in the polars Magnetic spin-orbit coupling and mass transfer rates in the polars

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999mnras.306..307c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 306, Issue 2, pp. 307-316.

Astronomy and Astrophysics

Astronomy

7

Accretion, Accretion Discs, Magnetic Fields, Binaries: Close, Stars: Magnetic Fields, Novae, Cataclysmic Variables, White Dwarfs

Scientific paper

The magnetic torques resulting from an asynchronous white dwarf in an AM Herculis binary are considered. The magnetic field induced in the secondary leads to an orbital torque which affects the evolution rate of its Roche lobe. An over-synchronous primary transfers angular momentum to the orbit which significantly reduces the rate of shrinkage of the lobe, for a range of asynchronous periods. Although the effect on the total evolution time of the binary is small, the temporarily reduced accretion rate has important consequences for the condition to approach synchronism.

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