Role of the Symmetry Energy on the Structure of Neutron Stars with Unified Equations of State

The role of the symmetry energy on the internal constitution and the global structure of a cold nonaccreted neutron star is studied using a set of unified equations of state. Based on the nuclear energy-density functional theory, these equations of state provide a thermodynamically consistent treatm...

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Published inarXiv.org
Main Authors Chamel, Nicolas, Pearson, John Michael, Potekhin, Alexander Y, Fantina, Anthea F, Ducoin, Camille, Dutta, Anup, Goriely, Stéphane, Perot, Loïc
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 29.04.2019
Subjects
Binary stars
Constitution
Density functional theory
Equations of state
Gravitational waves
Mathematical analysis
Neutron stars
Neutrons
Nuclear energy
Nuclear engineering
Nuclear reactors
Physics - High Energy Astrophysical Phenomena
Physics - Nuclear Theory
Symmetry
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Summary:The role of the symmetry energy on the internal constitution and the global structure of a cold nonaccreted neutron star is studied using a set of unified equations of state. Based on the nuclear energy-density functional theory, these equations of state provide a thermodynamically consistent treatment of all regions of the star and were calculated using the four different Brussels-Montreal functionals BSk22, BSk24, BSk25 and BSk26. Our predictions are compared to various constraints inferred from astrophysical observations including the recent detection of the gravitational wave signal GW170817 from a binary neutron-star merger.
ISSN:2331-8422
DOI:10.48550/arxiv.1904.12477