AE Aquarii represents a new subclass of Cataclysmic Variables
N.R. Ikhsanov, N.G. Beskrovnaya

TL;DR
AE Aquarii is a unique nova-like star with a magnetized white dwarf in an ejector state, representing a new subclass of Cataclysmic Variables, bridging the gap between Polars and recycled pulsars.
Contribution
This study identifies AE Aquarii as a new subclass of Cataclysmic Variables with a white dwarf in the ejector state, distinct from known subclasses.
Findings
White dwarf in AE Aqr is in the ejector state.
Magnetic dipole moment is approximately 1.5 x 10^{34} G cm^3.
White dwarf resembles a recycled pulsar.
Abstract
We analyze properties of the unique nova-like star AE Aquarii identified with a close binary system containing a red dwarf and a very fast rotating magnetized white dwarf. It cannot be assigned to any of the three commonly adopted sub-classes of Cataclysmic Variables: Polars, Intermediate Polars, and Accreting non-magnetized White Dwarfs. Our study has shown that the white dwarf in AE Aqr is in the ejector state and its dipole magnetic moment is . It switched into this state due to intensive mass exchange between the system components during a previous epoch. A high rate of disk accretion onto the white dwarf surface resulted in temporary screening of its magnetic field and spin-up of the white dwarf to its present spin period. Transition of the white dwarf to the ejector state had occurred at a final stage of the spin-up epoch as its magnetic field…
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