关于奇异激变变星AE宝瓶座的起源
On the origin of the peculiar cataclysmic variable AE Aquarii
摘要：
宝瓶座AE是一个包含红矮星和磁化白矮星的近距离双星系统，自转周期为33秒。白矮星的短自旋周期是由系统各组成部分在前一个纪元中的强烈质量交换引起的。我们发现，一个高速率的磁盘吸积到白矮星表面导致临时屏蔽其磁场和自旋的白矮星到目前的自旋周期。白矮星到喷射状态的转变发生在自旋上升时期的最后阶段，在它的磁场由于扩散而从吸积的等离子体中出现之后。在这个场景的框架中，AE Aqr代表了北极星进化链中缺失的一环，而白矮星类似于一颗回收的脉冲星。
英文摘要：
The nova-like variable AE Aquarii is a close binary system containing a red dwarf and a magnetized white dwarf rotating with the period of 33 seconds. A short spin period of the white dwarf is caused by an intensive mass exchange between the system components during a previous epoch. We show that 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 occurred at a final stage of the spin-up epoch after its magnetic field had emerged from the accreted plasma due to diffusion. In the frame of this scenario AE Aqr represents a missing link in the chain of Polars evolution and the white dwarf resembles a recycled pulsar.
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