English

Complete relativistic equation of state for neutron stars

Nuclear Theory 2009-11-07 v1 Astrophysics

Abstract

We construct the equation of state (EOS) in a wide density range for neutron stars using the relativistic mean field theory. The properties of neutron star matter with both uniform and non-uniform distributions are studied consistently. The inclusion of hyperons considerably softens the EOS at high densities. The Thomas-Fermi approximation is used to describe the non-uniform matter, which is composed of a lattice of heavy nuclei. The phase transition from uniform matter to non-uniform matter occurs around 0.06fm30.06 \rm{fm^{-3}}, and the free neutrons drip out of nuclei at about 2.4×104 fm32.4 \times 10^{-4}\ \rm{fm^{-3}}. We apply the resulting EOS to investigate the neutron star properties such as maximum mass and composition of neutron stars.

Keywords

Cite

@article{arxiv.nucl-th/0202030,
  title  = {Complete relativistic equation of state for neutron stars},
  author = {H. Shen},
  journal= {arXiv preprint arXiv:nucl-th/0202030},
  year   = {2009}
}

Comments

23 pages, REVTeX, 9 ps figures, to appear in Phys. Rev. C