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Neutron star properties with relativistic equations of state

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arxiv nucl-th/9711025 v1 pith:3VOEP5EN submitted 1997-11-12 nucl-th astro-ph

Neutron star properties with relativistic equations of state

classification nucl-th astro-ph
keywords neutronrelativisticstarequationspropertiesstarsstateapproximation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the properties of neutron stars adopting relativistic equations of state of neutron star matter, calculated in the framework of the relativistic Brueckner-Hartree-Fock approximation for electrically charge neutral neutron star matter in beta-equilibrium. For higher densities more baryons (hyperons etc.) are included by means of the relativistic Hartree- or Hartree-Fock approximation. The special features of the different approximations and compositions are discussed in detail. Besides standard neutron star properties special emphasis is put on the limiting periods of neutron stars, for which the Kepler criterion and gravitation-reaction instabilities are considered. Furthermore the cooling behaviour of neutron stars is investigated, too. For comparison we give also the outcome for some nonrelativistic equations of state.

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    Hybrid star EOS constructed from QCDSR couplings in RMF hadronic model and bag/NJL quark models with Gibbs/Maxwell transitions yields mass-radius and tidal deformability predictions.