From neutron skins and neutron matter to the neutron star crust

Abstract

We present the first Bayesian inference of neutron star crust properties to incorporate neutron skin data, including the recent PREX measurement of the neutron skin of ${}^{208}$Pb, combined with recent chiral effective field theory predictions of pure neutron matter with statistical errors. Using a compressible liquid drop model with an extended Skyrme energy-density functional, we obtain the most stringent constraints to date on the transition pressure $P_{\mathrm{cc}}=0.33_{-0.07}^{+0.07}$ MeV fm${}^{-3}$ and chemical potential ${\mu }_{\mathrm{cc}}=12.6_{-1.9}^{+1.8}$ MeV (which control the mass, moment of inertia and thickness of a neutron star crust), the proton fractions that bracket the pasta phases $y_{\mathrm{p}}=0.115_{-0.017}^{+0.016}$ and $y_{\mathrm{cc}}=0.041_{-0.006}^{+0.007}$, as well as the relative mass and moment of inertia $\Delta M_{\mathrm{p}}/\Delta M_{\mathrm{c}}\approx \Delta I_{\mathrm{p}}/\Delta I_{\mathrm{c}}=0.54_{-0.09}^{+0.05}$ and thickness $\Delta R_{\mathrm{p}}/\Delta R_{\mathrm{c}}=0.129_{-0.030}^{+0.019}$ of the layers of non-spherical nuclei (nuclear pasta) in the crust.

arXiv comment7 pages, 6 figures, 1 tables; Accepted for publication in Physics Letters B

References in corpus (48)

• Neutron Star Observations: Prognosis for Equation of State Constraints
• Isospin Asymmetry in Nuclei and Neutron Stars
• Neutron Star Structure and the Neutron Radius of 208Pb
• Constraints on the symmetry energy and neutron skins from experiments and theory
• Skyrme Interaction and Nuclear Matter Constraints
• Accurate Determination of the Neutron Skin Thickness of ${}^{208}$Pb through Parity-Violation in Electron Scattering
• Implications of PREX-II on the equation of state of neutron-rich matter
• Constraining the Symmetry Parameters of the Nuclear Interaction
• How well do we know the neutron-matter equation of state at the densities inside neutron stars? A Bayesian approach with correlated uncertainties
• Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei
• Symmetry Parameter Constraints From A Lower Bound On The Neutron-Matter Energy
• A way forward in the study of the symmetry energy: experiment, theory, and observation
• Surface Symmetry Energy
• Resonant Shattering of Neutron Star Crusts
• Constraints on the Symmetry Energy Using the Mass-Radius Relation of Neutron Stars
• Mapping crustal heating with the cooling lightcurves of quasi-persistent transients
• Disordered nuclear pasta, magnetic field decay, and crust cooling in neutron stars
• A highly resistive layer within the crust of X-ray pulsars limits their spin periods
• Resonant Fermi gases with a large effective range
• A New Open-Source Nuclear Equation of State Framework based on the Liquid-Drop Model with Skyrme Interaction
• Probing the Equation of State of Nuclear Matter via Neutron Star Asteroseismology
• Constraints on Neutron Star Crusts From Oscillations in Giant Flares
• A survey of the parameter space of the compressible liquid drop model as applied to the neutron star inner crust
• Upper limits on the observational effects of nuclear pasta in neutron stars
• Neutron Densities from a Global Analysis of Medium Energy Proton Nucleus Elastic Scattering
• Thermodynamic properties of nuclear "pasta" in neutron star crusts
• Neutron skins and neutron stars
• Bayesian analysis of the crust-core transition with a compressible liquid-drop model
• Decoding the Density Dependence of the Nuclear Symmetry Energy
• Neutron star crusts from mean field models constrained by chiral effective field theory
• Constraining the density slope of nuclear symmetry energy at subsaturation densities using electric dipole polarizability in ${}^{208}$Pb
• Correlations imposed by the unitary limit between few-nucleon systems, nuclear matter and neutron stars
• Uncertainties in the pasta-phase properties of catalysed neutron stars
• Symmetry energy constraints from GW170817 and laboratory experiments
• Constraints on the symmetry energy from observational probes of the neutron star crust
• Neutron skins of ${}^{208}$Pb and ${}^{48}$Ca from pionic probes
• Nuclear symmetry energy and the r-mode instability of neutron stars
• Sensitivity of the neutron star r-mode instability window to the density dependence of the nuclear symmetry energy
• Extended Skyrme interactions for nuclear matter, finite nuclei and neutron stars
• Constraining the neutron-matter equation of state with gravitational waves
• The cooling of the Cassiopeia A neutron star as a probe of the nuclear symmetry energy and nuclear pasta
• The nuclear symmetry energy from neutron skins and pure neutron matter in a Bayesian framework
• Direct Urca Process in a Neutron Star Mantle
• Resonant Shattering Flares as Multimessenger Probes of the Nuclear Symmetry Energy
• Glassy quantum nuclear pasta in neutron star crusts
• Prior probability distributions of neutron star crust models
• Properties of the neutron star crust: Quantifying and correlating uncertainties with improved nuclear physics
• Properties of neutron star crust with improved nuclear physics: Impact of chiral EFT interactions and experimental nuclear masses

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• Bayesian inference of neutron-star observables based on effective nuclear interactions
• Magnetised neutron star crust within effective relativistic mean-field model