The effect of asynchronism on wind-driven mass transfer rates in the polars

Details The effect of asynchronism on wind-driven mass transfer rates in the polars The effect of asynchronism on wind-driven mass transfer rates in the polars

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001mnras.321...96c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 321, Issue 1, pp. 96-102.

Astronomy and Astrophysics

Astronomy

1

Accretion, Accretion Discs, Magnetic Fields, Binaries: Close, Stars: Magnetic Fields, White Dwarfs, Accretion, Accretion Discs, Magnetic Fields, Binaries: Close, Stars: Magnetic Fields, White Dwarfs

Scientific paper

An asynchronous magnetic white dwarf affects the rate of orbital evolution in AM Herculis binaries. An over-synchronous star leads to a positive orbital magnetic torque which reduces the rate of shrinkage of the secondary star's Roche lobe, and hence reduces the mass transfer rate. An opposing effect occurs as a result of the orbital angular momentum loss via secondary mass transfer in the absence of an accretion disc. The modification of the magnetic braking-driven synchronous mass transfer rate is calculated for a range of degrees of asynchronism, and its effect is compared at different orbital periods.

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