# The Equation of State for the Nucleonic and Hyperonic Core of Neutron Stars

@article{Tolos2017TheEO, title={The Equation of State for the Nucleonic and Hyperonic Core of Neutron Stars}, author={Laura Tolos and Mario Centelles and {\`A}ngels Ramos}, journal={Publications of the Astronomical Society of Australia}, year={2017}, volume={34} }

Abstract We re-examine the equation of state for the nucleonic and hyperonic inner core of neutron stars that satisfies the 2M⊙ observations as well as the recent determinations of stellar radii below 13 km, while fulfilling the saturation properties of nuclear matter and finite nuclei together with the constraints on the high-density nuclear pressure coming from heavy-ion collisions. The recent nucleonic FSU2R and hyperonic FSU2H models are updated in order to improve the behaviour of pure… Expand

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#### References

SHOWING 1-10 OF 34 REFERENCES

Equation of State for Nucleonic and Hyperonic Neutron Stars with Mass and Radius Constraints

- Physics
- 2016

We obtain a new equation of state for the nucleonic and hyperonic inner core of neutron stars that fulfills the 2$M_{\odot}$ observations as well as the recent determinations of stellar radii below… Expand

The Dense Matter Equation of State from Neutron Star Radius and Mass Measurements

- Physics
- 2015

We present a comprehensive study of spectroscopic radius measurements of twelve neutron stars obtained during thermonuclear bursts or in quiescence. We incorporate, for the first time, a large number… Expand

The Neutron Star Mass-Radius Relation and the Equation of State of Dense Matter

- Physics
- 2013

The equation of state (EOS) of dense matter has been a long-sought goal of nuclear physics. EOSs generate unique mass versus radius (M-R) relations for neutron stars, the ultra-dense remnants of… Expand

Constraining the Symmetry Parameters of the Nuclear Interaction

- Physics
- 2012

One of the major uncertainties in the dense matter equation of state has been the nuclear symmetry energy. The density dependence of the symmetry energy is important in nuclear astrophysics, as it… Expand

Neutron stars with hyperon cores: stellar radii and EOS near nuclear density

- Physics
- 2014

The existence of 2 Msun pulsars puts very strong constraints on the equation of state (EOS) of neutron stars (NSs) with hyperon cores, which can be satisfied only by special models of hadronic… Expand

A NEW EQUATION OF STATE FOR NEUTRON STAR MATTER WITH NUCLEI IN THE CRUST AND HYPERONS IN THE CORE

- Physics
- 2013

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… Expand

NEW HYPERON EQUATIONS OF STATE FOR SUPERNOVAE AND NEUTRON STARS IN DENSITY-DEPENDENT HADRON FIELD THEORY

- Physics
- 2014

We develop new hyperon equation of state (EoS) tables for core-collapse supernova simulations and neutron stars. These EoS tables are based on a density-dependent relativistic hadron field theory… Expand

EQUATION OF STATE AND NEUTRON STAR PROPERTIES CONSTRAINED BY NUCLEAR PHYSICS AND OBSERVATION

- Physics
- 2013

Microscopic calculations of neutron matter based on nuclear interactions derived from chiral effective field theory, combined with the recent observation of a 1.97 +/- 0.04 M-circle dot neutron star,… Expand

From Neutron Star Observables to the Equation of State. I. An Optimal Parametrization

- Physics
- 2016

The increasing number and precision of measurements of neutron star masses, radii, and, in the near future, moments of inertia offer the possibility of precisely determining the neutron star equation… Expand

A two-solar-mass neutron star measured using Shapiro delay

- Physics, Medicine
- Nature
- 2010

Radio timing observations of the binary millisecond pulsar J1614-2230 that show a strong Shapiro delay signature are presented and the pulsar mass is calculated to be (1.97 ± 0.04)M⊙, which rules out almost all currently proposed hyperon or boson condensate equations of state. Expand