Propeller-activated resonances and the fate of short-period cataclysmic variables

@article{Matthews2006PropelleractivatedRA,
  title={Propeller-activated resonances and the fate of short-period cataclysmic variables},
  author={O. M. Matthews and Peter J. Wheatley and Graham A. Wynn and M. R. Truss Paul Scherrer Institut and University of Warwick and University of Leicester and Durham University},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2006},
  volume={372},
  pages={1593-1601}
}
We show that the combination of a weak magnetic propeller and accretion disc resonances can effectively halt accretion in short-period cataclysmic variables (CVs) for large fractions of their lifetimes. This may help to explain the discrepancy between the observed and predicted orbital period distributions of CVs at short periods. Orbital resonances cause the disc to become eccentric, allowing material to fall back on to the donor star or out of the system. A weak magnetic field on a rapidly… 

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