Nordhaus et al. present an interesting model in which the accretion and disruption of a binary companion results in a strongly magnetized white dwarf. The key idea is that the evolved red giant can rapidly accreting the companion during a common envelope phase. As the companion is disrupted and forms an accretion disk, a strong magnetic field is generated by the differential rotation of the disk. They argue that it could also happen for magnetars!
arXiv:1010.1529 [pdf, other] Title: The formation of high-field magnetic white dwarfs from common envelopes
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2 comments:
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