Properties of β-stable neutron star matter with hyperons

Details Properties of β-stable neutron star matter with hyperons Properties of β-stable neutron star matter with hyperons

1999-12-08

arxiv.org/abs/nucl-th/9912016v1

Physics

Nuclear Physics

Nuclear Theory

25 pages, 8 figures

Scientific paper

We present results from many-body calculations for \beta-stable neutron star matter with nucleonic and hyperonic degrees of freedom, employing the most recent parametrizations of the baryon-baryon interaction of the Nijmegen group. It is found that the only strange baryons emerging in \beta-stable matter up to total baryonic densities of 1.2 fm^{-3} are \Sigma^- and \Lambda. The corresponding equations of state are thence used to compute properties of neutron stars such as the masses, moments of inertia and radii. We also study the possibility of forming a hyperon superfluid and discuss its implications for neutron stars.

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