On the Rapid Spin-down and Low Luminosity Accretion in AE Aqr

Chul-Sung Choi

Insu Yi


AE Aqr is an unusual close binary system with a large spin-down rate, a relatively low quiescent luminosity, and clear pulse signals. We consider an unconventional picture of AE Aqr in which an accreting white dwarf is rapidly spun-down via gravitational radiation emission and the accretion proceeds at high altitudes while bulk of inflowing material is ejected in a propeller-like manner. We discuss spread of the accreted matarial on the magnetic poles in the presence of a strong magnetic field. Implications on emisison spectra and time variabilities are also discussed.

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On 16 Jul 1999, 09:18.