Inner crust of neutron stars with mass-fitted Skyrme functionals
Abstract
The equation of state and composition of the inner crust of neutron stars at zero temperature are calculated, using the T = 0 version of the TETFSI (temperature-dependent extended Thomas-Fermi plus Strutinsky integral) method, for each of a family of three functionals based on Skyrme-type forces BSk19, BSk20 and BSk21, which are characterized by different degrees of symmetry-energy stiffness, and also for the SLy4 functional. We also solve the Tolman-Oppenheimer-Volkoff equations to calculate the distribution of mass within the inner crust. Qualitatively similar results are found for all four functionals, and in particular the number of protons per Wigner-Seitz cell is in all cases equal to 40 throughout the inner crust.
Keywords
Cite
@article{arxiv.1206.0205,
title = {Inner crust of neutron stars with mass-fitted Skyrme functionals},
author = {J. M. Pearson and N. Chamel and S. Goriely and C. Ducoin},
journal= {arXiv preprint arXiv:1206.0205},
year = {2012}
}
Comments
35 pages, 13 figures, accepted for publication in Physical Review C