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We consider the accretion-driven spin-up of a magnetized degenerate star in a close binary system under different assumptions about the accretion scenario. We have estimated the minimum possible spin period which the star can achieve in the course of such spin-up. We show that the star can achieve the minimum possible value of the spin period if the interchange instabilities of its magnetospheric boundary are suppressed.
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Ikhsanov et al. (2024) studied this question.
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