The induced surface tension contribution for the equation of state of neutron stars

Abstract

We apply a novel equation of state (EoS) that includes the surface tension contribution induced by interparticle interaction and asymmetry between neutrons and protons, to the study of neutron star (NS) properties. This elaborated EoS is obtained from the virial expansion applied to multicomponent particle mixtures with hard core repulsion. The considered model is in full concordance with all the known properties of normal nuclear matter, provides a high-quality description of the proton flow constraints, hadron multiplicities created during the nuclear-nuclear collision experiments, and equally is consistent with astrophysical data coming from NS observations. The analysis suggests that the best model parameterization gives the incompressibility factor $K_0$, symmetry energy $J$, and symmetry energy slope $L$ at normal nuclear density equal to $200$ MeV, $30$ MeV, and $113.28-114.91$ MeV, respectively. The mass-radius relations found for NSs computed with this EoS are consistent with astrophysical observations.

8 pages, 6 figures

References in corpus (13)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Multi-messenger Observations of a Binary Neutron Star Merger
• New constraints on radii and tidal deformabilities of neutron stars from GW170817
• Constraints on the high-density nuclear equation of state from the phenomenology of compact stars and heavy-ion collisions
• Binary Neutron Star Mergers: Dependence on the Nuclear Equation of State
• Rapid neutrino cooling in the neutron star MXB 1659-29
• Effects of the symmetry energy on properties of neutron star crusts near the neutron drip density
• The role of superfluidity in nuclear incompressibilities
• Hadron yields, the chemical freeze-out and the QCD phase diagram
• The Flow Constraint Influence on the Properties of Nuclear Matter Critical Endpoint
• Neutron stars: A novel equation of state with induced surface tension

Cited by in corpus (17)

• Bosonic Dark Matter in Neutron Stars and its Effect on Gravitational Wave Signal
• Neutron stars: new constraints on asymmetric dark matter
• The Science of the Einstein Telescope
• What is the nature of the HESS J1731-347 compact object?
• Bosonic Dark Matter in Light of the NICER Precise Mass-Radius Measurements
• The effects of self-interacting bosonic dark matter on neutron star properties
• Asteroseismology: radial oscillations of neutron stars with realistic equation of state
• Rapid neutron star cooling triggered by dark matter
• Testing the phase transition parameters inside neutron stars with the production of protons and lambdas in relativistic heavy-ion collisions
• Bosonic dark matter dynamics in hybrid neutron stars
• The impact of asymmetric dark matter on the thermal evolution of nucleonic and hyperonic compact stars
• Self-consistent Treatment of Quantum Gases of D-dimensional Hard Spheres Beyond the Van der Waals Approximation
• Second look to the Polyakov Loop Nambu-Jona-Lasinio model at finite baryonic density
• Rapidly spinning dark matter-admixed neutron stars
• The concept of induced surface and curvature tensions and a unified description of the gas of hard discs and hard spheres
• Alternative Formulation of the Induced Surface and Curvature Tensions Approach
• Neutron star cooling within the equation of state with induced surface tension