A new equation of state for neutron star matter with nuclei in the crust and hyperons in the core

Tsuyoshi Miyatsu, Sachiko Yamamuro, Ken'ichiro Nakazato

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

The equation of state for neutron stars in a wide-density range at zero temperature is constructed. The chiral quark-meson coupling model within relativistic Hartree-Fock approximation is adopted for uniform nuclear matter. The coupling constants are determined so as to reproduce the experimental data of atomic nuclei and hypernuclei. In the crust region, nuclei are taken into account within the Thomas-Fermi calculation. All octet baryons are considered in the core region, while only Ξ- appears in neutron stars. The resultant maximum mass of neutron stars is 1.95 M , which is consistent with the constraint from the recently observed massive pulsar, PSR J1614-2230.

Original languageEnglish
Article number4
JournalAstrophysical Journal
Volume777
Issue number1
DOIs
Publication statusPublished - Nov 1 2013

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hyperons
equation of state
neutron stars
crusts
equations of state
crust
nuclei
hypernuclei
octets
Hartree approximation
pulsars
baryons
mesons
quarks
temperature
calculation

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

A new equation of state for neutron star matter with nuclei in the crust and hyperons in the core. / Miyatsu, Tsuyoshi; Yamamuro, Sachiko; Nakazato, Ken'ichiro.

In: Astrophysical Journal, Vol. 777, No. 1, 4, 01.11.2013.

Research output: Contribution to journalArticle

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