dorsal/arxiv
View SchemaAsymmetric nuclear matter and neutron star properties
| Authors | L. Engvik, G. Bao, M. Hjorth-Jensen, E. Osnes, E. Oestaard |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9509016 |
| URL | https://arxiv.org/abs/nucl-th/9509016 |
| DOI | 10.1086/177827 |
| Journal | Astrophysical Journal 469 1996 794-807 |
Abstract
In this work we calculate the total mass, radius, moment of inertia, and surface gravitational redshift for neutron stars using various equations of state (EOS). Modern meson-exchange potential models are used to evaluate the $G$-matrix for asymmetric nuclear matter. We calculate both a non-relativistic and a relativistic EOS. Of importance here is the fact that relativistic Brueckner-Hartree-Fock calculations for symmetric nuclear matter fit the empirical data, which are not reproduced by non-relativistic calculations. Relativistic effects are known to be important at high densities, giving an increased repulsion. This leads to a stiffer EOS compared to the EOS derived with a non-relativistic approach. Both the non-relativistic and the relativistic EOS yield moments of inertia and redshifts in agreement with the accepted values. The relativistic EOS yields, however, too large mass and radius. The implications are discussed.
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"abstract": "In this work we calculate the total mass, radius, moment of inertia, and\nsurface gravitational redshift for neutron stars using various equations of\nstate (EOS). Modern meson-exchange potential models are used to evaluate the\n$G$-matrix for asymmetric nuclear matter. We calculate both a non-relativistic\nand a relativistic EOS. Of importance here is the fact that relativistic\nBrueckner-Hartree-Fock calculations for symmetric nuclear matter fit the\nempirical data, which are not reproduced by non-relativistic calculations.\nRelativistic effects are known to be important at high densities, giving an\nincreased repulsion. This leads to a stiffer EOS compared to the EOS derived\nwith a non-relativistic approach. Both the non-relativistic and the\nrelativistic EOS yield moments of inertia and redshifts in agreement with the\naccepted values. The relativistic EOS yields, however, too large mass and\nradius. The implications are discussed.",
"arxiv_id": "nucl-th/9509016",
"authors": [
"L. Engvik",
"G. Bao",
"M. Hjorth-Jensen",
"E. Osnes",
"E. Oestaard"
],
"categories": [
"nucl-th"
],
"doi": "10.1086/177827",
"journal_ref": "Astrophysical Journal 469 1996 794-807",
"title": "Asymmetric nuclear matter and neutron star properties",
"url": "https://arxiv.org/abs/nucl-th/9509016"
},
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