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Title: Asymmetric nuclear matter and neutron star properties

Abstract

We calculate properties of neutron stars such as mass and radius using a relativistic Dirac-Brueckner-Hartree-Fock approach. Modern meson-exchange potential models are used to evaluate the [ital G] matrix for asymmetric nuclear matter. For pure neutron matter we find the maximum mass to be [ital M][sub max][approx]2.4[ital M][sub [circle dot]] for a radius [ital R][approx]12 km, whereas with a proton fraction of 30% we find [ital M][sub max][approx]2.1[ital M][sub [circle dot]] for a radius [ital R][approx]10.5 km, close to the experimental values. The implications are discussed.

Authors:
; ;  [1]; ;  [2]
  1. (Department of Physics, University of Oslo, N-0316 Oslo (Norway))
  2. (Department of Physics, AVH, University of Trondheim, N-7055 Dragvoll (Norway))
Publication Date:
OSTI Identifier:
7058016
Alternate Identifier(s):
OSTI ID: 7058016
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (United States)
Additional Journal Information:
Journal Volume: 73:20; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; NEUTRON STARS; MASS; NUCLEAR MATTER; ASYMMETRY; G MATRIX; HARTREE-FOCK METHOD; POTENTIALS; PROTONS; BARYONS; CALCULATION METHODS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; MATRICES; MATTER; NUCLEONS; STARS 663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)

Citation Formats

Engvik, L., Hjorth-Jensen, M., Osnes, E., Bao, G., and Ostgaard, E. Asymmetric nuclear matter and neutron star properties. United States: N. p., 1994. Web. doi:10.1103/PhysRevLett.73.2650.
Engvik, L., Hjorth-Jensen, M., Osnes, E., Bao, G., & Ostgaard, E. Asymmetric nuclear matter and neutron star properties. United States. doi:10.1103/PhysRevLett.73.2650.
Engvik, L., Hjorth-Jensen, M., Osnes, E., Bao, G., and Ostgaard, E. Mon . "Asymmetric nuclear matter and neutron star properties". United States. doi:10.1103/PhysRevLett.73.2650.
@article{osti_7058016,
title = {Asymmetric nuclear matter and neutron star properties},
author = {Engvik, L. and Hjorth-Jensen, M. and Osnes, E. and Bao, G. and Ostgaard, E.},
abstractNote = {We calculate properties of neutron stars such as mass and radius using a relativistic Dirac-Brueckner-Hartree-Fock approach. Modern meson-exchange potential models are used to evaluate the [ital G] matrix for asymmetric nuclear matter. For pure neutron matter we find the maximum mass to be [ital M][sub max][approx]2.4[ital M][sub [circle dot]] for a radius [ital R][approx]12 km, whereas with a proton fraction of 30% we find [ital M][sub max][approx]2.1[ital M][sub [circle dot]] for a radius [ital R][approx]10.5 km, close to the experimental values. The implications are discussed.},
doi = {10.1103/PhysRevLett.73.2650},
journal = {Physical Review Letters; (United States)},
issn = {0031-9007},
number = ,
volume = 73:20,
place = {United States},
year = {1994},
month = {11}
}