Physics
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7383s&link_type=abstract
HST Proposal ID #7383
Physics
Hst Proposal Id #7383 Binary Stars
Scientific paper
We propose PC imaging of the field about the cataclysmic variable AE Aqr. The recent suggestion that accreting material in CVs is diamagnetic and non-homogeneous provides a spectacular prediction for the fate of accreting gas in the circumstellar environment of AE Aqr - namely that the accretion stream unavoidably gains energy and angular momentum via interaction with the magnetosphere of the rapidly rotating white dwarf. The net result of this magnetic propeller is that 99% of the accreting material is ejected from the system, forming an equatorial spiral nebula. PC imaging is the only direct experiment available to test this prediction. If found, not only will the long-standing problems concerning the nature of AE Aqr be solved, but the nebula will provide proof that diamagnetic interaction can drive mass and angular momentum, and must be considered in order to provide a physical treatment of accretion in magnetic media. In many cases the addition of this element to accretion models provides major deviations from previously predicted gas behaviours and is able to explain a diverse number of observed phenomena in CVs which have remained unsolved until now.
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