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Superfluidity in Disordered Neutron Stars Crusts

Authors
  • Sauls, J.A.
  • Chamel, N.
  • Alpar, M.A.
Publication Date
Jan 27, 2020
Source
INSPIRE-HEP
Keywords
License
Unknown
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Abstract

Nonequilibrium conditions imposed by neutrino cooling through the liquid-solid transition lead to disorder in the solid crust of neutron stars. Disorder reduces the superfluid fraction, $\rho_s/\rho$, at densities above that of neutron drip, $\rho_d \approx 4\times 10^{11}\,g/cm^3$. For an amorphous solid crust the suppression of $\rho_s$ is small, except in the highest density regions of the crust. In contrast to the strong reduction in neutron conduction predicted for coherent Bragg scattering in a crystalline crust, the disordered solid crust supports sufficient neutron superfluid density to account for pulsar glitches.

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