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Paper: The Spins of White Dwarfs and Pulsars
Volume: 157, Annapolis Workshop on Magnetic Cataclysmic Variables
Page: 247
Authors: Livio, Mario
Abstract: The spins of the white dwarfs in dwarf nova systems are examined, and it is shown that the observed spins are considerably slower than expected. It is also shown that if angular momentum were to be transported efficiently between the cores and the envelopes of pulsar progenitors (in the giant phase), then the initial spin of pulsars would not have been consistent with observations. It is suggested that angular momentum is removed from the white dwarfs in dwarf nova systems during nova explosions. It is shown, however, that the coupling between the white dwarf and the expanded envelope, following a nova outburst, is rather inefficient. Assuming the same efficiency for the core-envelope coupling in the pulsar progenitors can explain the initial spins of pulsars.
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