author={Saul Rappaport and John Fregeau and H. C. Spruit},
  journal={The Astrophysical Journal},
The recent emergence of a new class of accretion-powered, transient, millisecond X-ray pulsars presents some difficulties for the conventional picture of accretion onto rapidly rotating magnetized neutron stars and their spin behavior during outbursts. In particular, it is not clear that the standard paradigm can accommodate the wide range in (i.e., a factor of 50) over which these systems manage to accrete and the high rate of spin-down that the neutron stars exhibit in at least a number of… Expand

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