Relativistic hypernuclear compact stars with calibrated equations of state

Abstract

Within the covariant density functional theory of hypernuclear matter we build a series of equations of state for hypernuclear compact stars, by calibrating the coupling constants of the $\Xi$-hyperon to the experimental binding energy of the single-$\Xi$ hypernuclei ${}_{{\Xi }^{-}}^{15}$C and ${}_{{\Xi }^{-}}^{12}$Be. Coupling constants of the $\Lambda$-hyperon to nucleons have been calibrated on a vast collection of experimental data on single $\Lambda$-hypernuclei and we employ those values. Uncertainties on the couplings of the $\Sigma$-hyperon to nuclear matter, due to lack of experimental data, are accounted for by allowing for a wide variation of the well depth of $\Sigma$ at rest in symmetric saturated nuclear matter. To account for uncertainties in the nucleonic sector at densities much larger than the saturation density, a rich collection of parametrizations is employed, some of them in agreement with existing constraints from nuclear physics and astrophysics. Neutron star properties are investigated with all these calibrated equations of state. The effects of the presence of hyperons on the radius, on the tidal deformability, on the moment of inertia, and on the nucleonic direct Urca process are discussed. The sensitivity of the hyperonic direct Urca processes to uncertainties in the nucleonic and hyperonic sectors is also addressed. It is shown that the relative variations of the radius, tidal deformability and moment of inertia from the values that characterize purely nucleonic stars are linearly correlated with the strangeness fraction. The maximum radius deviation, obtained for most massive neutron stars, is $\approx 10\%$. The reduction of the maximum mass, triggered by nucleation of strangeness, is estimated at $\approx 15-20\%$, out of which 5\% comes from insufficient information on the $\Sigma$-hyperon interactions.

arXiv commentOpen access. Supplemental Material available at https://journals.aps.org/prd/abstract/10.1103/PhysRevD.101.034017

References in corpus (69)

• 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
• GW170817: Measurements of Neutron Star Radii and Equation of State
• PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
• A New Parameterization for the Lagrangian Density of Relativistic Mean Field Theory
• Tidal Love numbers of neutron stars
• Properties of the binary neutron star merger GW170817
• Equations of state for supernovae and compact stars
• Composition and thermodynamics of nuclear matter with light clusters
• Neutron Star Structure and the Neutron Radius of 208Pb
• The NANOGrav 11-year Data Set: High-precision timing of 45 Millisecond Pulsars
• Measurement of the Neutron Radius of 208Pb Through Parity-Violation in Electron Scattering
• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• Constraining the Symmetry Parameters of the Nuclear Interaction
• Strangeness in nuclear physics
• Generic conditions for stable hybrid stars
• Hyperons and massive neutron stars: vector repulsion and SU(3) symmetry
• Neutron star radii and crusts: uncertainties and unified equations of state
• Building relativistic mean field models for finite nuclei and neutron stars
• Composition and stability of hybrid stars with hyperons and quark color-superconductivity
• Quark Matter In Massive Compact Stars
• Do hyperons exist in the interior of neutron stars ?
• Quark matter in compact stars?
• Evidence of Xi hypernuclear production in the ^{12}C(K^-,K^+)^{12}_{Xi}Be reaction
• Maximum mass of neutron stars and strange neutron-star cores
• Hyperons in neutron-star cores and two-solar-mass pulsar
• Hadron-Quark Crossover and Massive Hybrid Stars with Strangeness
• Compact stars with sequential QCD phase transitions
• Estimation of the effect of hyperonic three-body forces on the maximum mass of neutron stars
• Implications of the measurement of pulsars with two solar masses for quark matter in compact stars and HIC. A NJL model case study
• Dense matter with eXTP
• (No) neutron star maximum mass constraint from hypernuclei
• Equation of state of hypernuclear matter: impact of hyperon--scalar-meson couplings
• Constraining hypernuclear density functional with $\Lambda$-hypernuclei and compact stars
• The Equation of State for the Nucleonic and Hyperonic Core of Neutron Stars
• Observational Constraints on Neutron Star Masses and Radii
• Critical Density and Impact of $\Delta (1232)$ Resonance Formation in Neutron Stars
• The Vlasov formalism for extended relativistic mean field models: the crust-core transition and the stellar matter equation of state
• Implications from GW170817 for $\Delta$-isobar admixed hypernuclear compact stars
• The Quarkyonic Star
• Constraints on the dense matter EOS from the measurements of PSR J0737-3039A moment of inertia and PSR J0751+1807 mass
• Interplay between the symmetry energy and the strangeness content of neutron stars
• High Resolution Spectroscopic Study of ${}_{\Lambda }^{10}$Be
• Hyperonic stars and the symmetry energy
• Interplay between $\Delta$ Particles and Hyperons in Neutron Stars
• Feasability of constraining the curvature parameter of the symmetry energy using elliptic flow data
• Mean field approaches for ${\Xi }^{-}$ hypernuclei and current experimental data
• Double-$\Lambda$ hypernuclei in the relativistic mean-field theory
• Shell-model calculations for p-shell hypernuclei
• Two-solar-mass hybrid stars: a two model description with the Nambu-Jona-Lasinio quark model
• Cooling of Small and Massive Hyperonic Stars
• Rotating neutron stars with exotic cores: masses, radii, stability
• Hyperons in hot dense matter: what do the constraints tell us for equation of state?
• Light $\Xi$ hypernuclei in four-body cluster models
• A study of hyperons in nuclear matter based on chiral effective field theory
• Influence of the symmetry energy on nuclear pasta in neutron star crusts
• Search for ${}_{\Lambda }^6$H hypernucleus by the ${}^6$Li$({\pi }^{-},K^{+})$ reaction at $p_{{\pi }^{-}}$ = 1.2 GeV/$c$
• The scenario of two families of compact stars 1. Equations of state, mass-radius relations and binary systems
• Structure of ${}_{\Lambda }^{10}$Be and ${}_{\Lambda }^{10}$B hypernuclei studied with the four-body cluster model
• Strangeness nuclear physics - 2010
• Strangeness and $\Delta$ resonance in compact stars with relativistic-mean-field models
• Formation of hybrid stars from metastable hadronic stars
• Density dependent hadronic models and the relation between neutron stars and neutron skin thickness
• Missing-mass spectroscopy with the ${}^6$Li(${\pi }^{-},K^{+}$)X reaction to search for ${}_{\Lambda }^6$H
• Repulsion and absorption of the $\Sigma$-nucleus potential for ${\Sigma }^{-}$-${}^5$He in the ${}^6$Li(${\pi }^{-}$, $K^{+}$) reaction

Cited by in corpus (44)

• Accurate Determination of the Neutron Skin Thickness of ${}^{208}$Pb through Parity-Violation in Electron Scattering
• Heavy Baryons in Compact Stars
• Proto-neutron stars with heavy baryons and universal relations
• Theoretical and Experimental Constraints for the Equation of State of Dense and Hot Matter
• Relativistic description of dense matter equation of state and compatibility with neutron star observables: a Bayesian approach
• Confronting GW190814 with hyperonization in dense matter and hypernuclear compact stars
• Maximum mass of compact stars from gravitational wave events with finite-temperature equations of state
• The effects of self-interacting bosonic dark matter on neutron star properties
• Spanning the full range of neutron star properties within a microscopic description
• Equations of state for hot neutron stars -- II. The role of exotic particle degrees of freedom
• Astrophysical implications on hyperon couplings and hyperon star properties with relativistic equations of states
• Thermal evolution of relativistic hyperonic compact stars with calibrated equations of state
• Neutron stars with large quark cores
• $\Delta$-admixed neutron stars: spinodal instabilities and dUrca processes
• Bayesian inference of signatures of hyperons inside neutron stars
• Toward a unified equation of state for multi-messenger astronomy
• On the moment of inertia of PSR J0737-3039 A from LIGO/Virgo and NICER
• Heavy Magnetic Neutron Stars
• Constraints on Nuclear Saturation Properties from Terrestrial Experiments and Astrophysical Observations of Neutron Stars
• Dense Matter in Neutron Stars with eXTP
• Delta baryons in neutron stars
• Determination of the symmetry energy from the neutron star equation of state
• The axion-baryon coupling in SU(3) heavy baryon chiral perturbation theory
• Unified neutron star equations of state calibrated to nuclear properties
• The impact of asymmetric dark matter on the thermal evolution of nucleonic and hyperonic compact stars
• Massive relativistic compact stars from SU(3) symmetric quark models
• Correlation of the hyperon potential stiffness with hyperon constituents in neutron stars and heavy-ion collisions
• Polytropic fits of modern and unified equations of state
• Quenched Λ spin-orbit splitting by relativistic Fock diagram in single-Λ hypernuclei
• The impact of hyperons on neutron star mergers: gravitational waves, mass ejection and black hole formation
• Hyperonization in compact stars
• Neutron star deformability with hyperonization in density-dependent relativistic mean-field models
• Neutron star equation of state: identifying hadronic matter characteristics
• Detecting Hyperons in neutron stars -- a machine learning approach
• Properties of Rotating Neutron Star in Density-dependent Relativistic Mean-field Models
• I-C-Q relations for rapidly rotating stable hybrid stars
• Impact of $\Xi$-Hypernuclear Constraints on Relativistic Equation of State and Properties of Hyperon Stars
• Charmed hypernuclei within density-dependent relativistic mean-field theory
• New solution to the hyperon puzzle of neutron stars: Quantum many-body effects
• Landau parameters and entrainment matrix of cold stellar matter: effect of the symmetry energy and strong magnetic fields
• Influence of hyperon-hyperon interaction on the properties of neutron stars
• Light hyperclusters and hyperons in low-density hot stellar matter
• Inferring the nuclear symmetry energy at supra saturation density from neutrino cooling
• Heavy baryons in hot stellar matter with light nuclei and hypernuclei