Equation of state and neutron star properties constrained by nuclear physics and observation

Abstract

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_sun neutron star, constrain the equation of state of neutron-rich matter at sub- and supranuclear densities. We discuss in detail the allowed equations of state and the impact of our results on the structure of neutron stars, the crust-core transition density, and the nuclear symmetry energy. In particular, we show that the predicted range for neutron star radii is robust. For use in astrophysical simulations, we provide detailed numerical tables for a representative set of equations of state consistent with these constraints.

35 pages, 12 figures, NORDITA preprint 2013-22

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• Light clusters in warm stellar matter: calibrating the cluster couplings
• Nambu-Jona-Lasinio description of hadronic matter from a Bayesian approach
• Equation of State Dependence of Nonlinear Mode-tide Coupling in Coalescing Binary Neutron Stars
• SU(3) parity doubling in cold neutron star matter
• Average speed of sound in neutron stars
• How Macroscopic Limits on Neutron Star Baryon Loss Yield Microscopic Limits on Non-Standard-Model Baryon Decay
• Holographic dense QCD in the Veneziano limit
• Hadron-quark phase transition: the QCD phase diagram and stellar conversion
• Compressional modes in two-superfluid neutron stars with leptonic buoyancy
• Polarized radiation from an accretion shock in accreting millisecond pulsars using exact Compton scattering formalism
• Comparison of different relativistic models applied to dense nuclear matter
• Realizing the potential of deep neural network for analyzing neutron star observables and dense matter equation of state
• Asymptotically conformal CFL quark matter within a nonlocal chiral quark model
• Quark Matter Equation of State from Perturbative QCD
• Nuclear pasta and symmetry energy in the relativistic point-coupling model
• Universal Relations For Generic Family Of Neutron Star Equations Of State
• A tight universal relation between the shape eccentricity and the moment of inertia for rotating neutron stars
• Bayesian inferences on covariant density functionals from multimessenger astrophysical data: Nucleonic models
• Equation of State of Neutron-Rich Matter in $d$-Dimensions
• Constraining the properties of dense matter and neutron stars by combining nuclear physics and gravitational waves from GW170817
• Neutron drip line of $Z=9-11$ isotopic chains
• Crust-core interface and bulk neutron star properties
• Constraining the relativistic mean-field models from PREX-2 data: Effective forces revisited
• A multi-reflection time-of-flight mass spectrometer for the offline ion source of the PUMA experiment
• Slowly Rotating Neutron Star with Holographic Multiquark Core: I-Love-Q Relations
• Exploring the Phase Diagram of V-QCD with Neutron Star Merger Simulations
• Strong magnetic fields and pasta phases revisited
• Accelerated detection of the binary neutron star gravitational-wave background
• Inferring the Equation of State from Neutron Star Observables via Machine Learning
• Thermal effects in hot and dilute homogeneous asymmetric nuclear matter
• The radius of a typical-mass neutron star and chiral effective field theory
• The Radius of PSR J0437-4715 from NICER Data
• Mixed Phase within the Multi-polytrope Approach to High Mass Twins
• Formation of twin compact stars in low-mass X-ray binaries: Implications on eccentric and isolated millisecond pulsar populations
• Exploring pathways to forming twin stars
• Order-of-magnitude physics of neutron stars
• Crust-core transition of a neutron star: effect of the temperature under strong magnetic fields
• Moving Beyond Chi-Squared in Nuclei and Neutron Stars
• Pasta phases in neutron stars under strong magnetic fields
• Nonparametric extensions of nuclear equations of state: probing the breakdown scale of relativistic mean-field theory
• Compact stars with strongly coupled quark matter in a strong magnetic field
• Testing the formation scenarios of binary neutron star systems with measurements of the neutron star moment of inertia
• On the maximum compactness of neutron stars
• Inferring three-nucleon couplings from multi-messenger neutron-star observations
• From QCD Symmetries to Nuclei and Neutron Stars
• Crustal failure as a tool to probe hybrid stars
• Color superconductivity under neutron-star conditions at next-to-leading order
• Neutron star matter as a dilute solution of protons in neutrons
• Neutron star deformability with hyperonization in density-dependent relativistic mean-field models
• Critical properties of calibrated relativistic mean-field models for the transition to warm, non-homogeneous nuclear matter
• Observational Probes of the Neutron Star Equation of State with Hyperons, Bosonic Dark Matter, and Quark Matter
• Bayesian Analysis of the Neutron Star Equation of State and Model Comparison: Insights from PSR J0437+4715, PSR J0614+3329, and Other Multi-Physics Data
• Bayesian analysis of a relativistic hadronic model constrained by recent astrophysical observations
• Relativistic Hartree-Fock Chiral Lagrangians with confinement, nucleon finite size and short-range effects
• Dense Baryonic Matter and Strangeness in Neutron Stars
• Insights Into Neutron Stars From Gravitational Redshifts and Universal Relations
• Constraining gravity with hadron physics: neutron stars, modified gravity and gravitational waves
• Towards a unified hadron-quark equation of state for neutron stars within the relativistic mean-field model
• Detecting Hyperons in neutron stars -- a machine learning approach
• Equation-of-state-informed pulse profile modeling
• Neutron stars and the cosmological constant problem
• Compact Star Matter: EoS with New Scaling Law
• Fundamental-mode eigenfrequencies of neutral and charged twin neutron stars
• Lepton-rich cold QCD matter in protoneutron stars
• Investigating the role of nuclear parameters in Neutron Star oscillations: a model comparison
• Model-Independent Determination of the Tidal Deformability of a 1.4 $M_{\odot }$ Neutron Star from Gravitational-Wave Measurements
• Isospin asymmetry and neutron stars in V-QCD
• Probing Strange Dark Matter through $f$-mode Oscillations of Neutron Stars with Hyperons and Quark Matter
• Strange matter prospects within the string-flip model
• Nuclear physics inputs for dense-matter modelling in neutron stars. The nuclear equation of state
• Dependence of postmerger properties on the thermal heating efficiency in neutron star mergers
• X-rays from Radio Millisecond Pulsars
• Determining the minimal mass of a proto-neutron star with chirally constrained nuclear equations of state
• How do mirror charge radii constrain density dependence of the symmetry energy?
• Magnetic frame-dragging correction to the electromagnetic solution of a compact neutron star
• Design and characterisation of an antiproton deceleration beamline for the PUMA experiment
• Conditional variational autoencoder inference of neutron star equation of state from astrophysical observations
• Pygmy resonances and symmetry energy
• Gravitational Bounce from the Quantum Exclusion Principle
• Effective Field Theories for Neutron Stars Physics
• Toward a realistic Buchdahl limit in f(R) theories of gravity
• A holographic study on QCD phase transition and neutron star properties
• Strong correlation of the neutron star core-crust transition density with the $\sigma$-meson mass via vacuum polarization
• Sequency Hierarchy Truncation (SeqHT) for Adiabatic State Preparation and Time Evolution in Quantum Simulations
• Hyperons in Neutron Stars across the observed mass range: Insights from realistic $\Lambda$-N and $\Lambda$-$\Lambda$ interactions within a Microscopic Framework
• Direct Inference of Nuclear Equation-of-State Parameters from Gravitational-Wave Observations
• Properties of the Object HESS J1731-347 as a Twin Compact Star
• Bayesian analysis of multimessenger M-R data with interpolated hybrid EoS
• Novel halos in light kaonic nuclei as an indicator of nuclear equation of state at supra-normal densities
• Neutron Star Radii from Laboratory Experiments
• Microscopic constraints for the equation of state and structure of neutron stars: a Bayesian model mixing framework
• Theoretical constraints on properties of low-mass neutron stars from EOS of inner crust matters
• Note on neutron star equation of state in the light of GW170817
• Effects of Neutron-Antineutron Transitions in Neutron Stars
• Neutron stars within relativistic central variational method
• Dipole Polarizability of Finite Nuclei as a Probe of Neutron Stars
• Gravitational Redshift for Rapidly Rotating Neutron Stars
• Early deconfinement of asymptotically conformal color-superconducting quark matter in neutron stars
• The sharpness of the quark-hadron transition and the properties of hybrid stars
• Systematic study of the morphology and length of slow stable hybrid star branches
• General gravitational properties of neutron stars: curvature invariants, binding energy, and trace anomaly
• Are NICER and GW170817 constraints suggesting a compactified scenario for Neutron stars?
• Neutron star crust and outer core equation of state from chiral effective field theory with quantified uncertainties
• Quark flavors in hot and dense holographic QCD: setup and comparison to data
• Landau parameters and entrainment matrix of cold stellar matter: effect of the symmetry energy and strong magnetic fields
• Precise constraint on properties of neutron stars through new universal relations and astronomical observations
• Cold Collapse and Bounce of an FLRW Cloud
• Electrically charged supermassive twin stars
• Proton fraction in neutron star matter: Dynamical mean-field approach
• Constraining the Nuclear Equation of State from Rotating Neutron Stars
• Strongly Interacting Dark Matter admixed Neutron Stars
• Constraints on r-modes and mountains on millisecond neutron stars in binary systems
• Density functional approach to quark matter with confinement and color superconductivity
• Unified nonparametric equation-of-state inference from the neutron-star crust to perturbative-QCD densities
• A new class of hybrid EoS with multiple critical endpoints for simulations of supernovae, neutron stars and their mergers
• Universal Relations for the Increase in the Mass and Radius of a Rotating Neutron Star
• Inferring the nuclear symmetry energy at supra saturation density from neutrino cooling
• Maximum mass limit of strange stars in quadratic curvature-matter coupled gravity
• Uncertainty in predicting the stochastic gravitational wave background from compact binary coalescences
• Binding energy of compact stars and their non-radial oscillations
• Inferring neutron-star Love-Q relations from gravitational waves in the hierarchical Bayesian framework
• Classification of $g$-modes for neutron stars with a strong transition: Novel universal relation including slow stable hybrid stars
• Toward a Unified Understanding of the Dense Matter Equation of State
• Bayesian inferences on covariant density functionals from multimessenger astrophysical data: Influences of parametrizations of density dependent couplings
• What We Have Learned from NICER About Neutron Star Radii
• Thermal liquid-gas phase transition in a quasi-one-dimensional dipolar Fermi gas
• Nonradial oscillations of realistic anisotropic neutron stars: Axial modes