The effect of the white dwarf magnetic field on dwarf nova outbursts.

If the white dwarf in a cataclysmic variable has a strong magnetic field, the inner region of the accretion disk is disrupted. The effect of this on the form of dwarf nova outbursts is calculated in models for disk instabilities and in models for mass-transfer instability. It is found that disruption of the inner disk region leads to shorter outbursts, and, for disk instabilities starting near the inner disk edge, to much longer intervals between outbursts. For moderate mass-transfer rates, the disk instability is suppressed altogether. The present models indicate that recently observed variability in cataclysmic variables with a magnetized white dwarf may be associated with dwarf nova type outbursts.