Properties of the outer crust of neutron stars from Hartree-Fock-Bogoliubov mass models
- Departement de Physique, Universite de Montreal, Montreal, Quebec, H3C 3J7 (Canada)
- Institut d'Astronomie et d'Astrophysique, Code Postal 226, Universite Libre de Bruxelles, B-1050 Brussels (Belgium)
We have calculated the zero-temperature properties of the outer crust of neutron stars for four nuclear-mass models based on the Hartree-Fock-Bogoliubov method: the three most recent Skyrme-force models (HFB-19, HFB-20, and HFB-21) and the Gogny-force model D1M. While the equation of state is substantially the same for the four models, the nuclidic composition varies considerably from one model to another. We solve the Tolman-Oppenheimer-Volkoff equations by integrating inward from the surface and thereby determine the abundance of each nuclide in the outer crust of a typical neutron star of mass 1.5M{sub {center_dot}} and radius 13 km. Although the total mass of the outer crust is slightly model dependent, its thickness is essentially the same for all four models.
- OSTI ID:
- 21502832
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 83, Issue 6; Other Information: DOI: 10.1103/PhysRevC.83.065810; (c) 2011 American Institute of Physics; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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