Bayesian analysis of a relativistic hadronic model constrained by recent astrophysical observations

Abstract

We use Bayesian analysis in order to constrain the equation of state for nuclear matter from astrophysical data related to the recent measurements from the NICER mission, LIGO/Virgo collaboration, and probability distributions of mass and radius from other 12 sources, including thermonuclear busters, and quiescent low-mass X-ray binaries. For this purpose, we base our study on a relativistic hadronic mean field model including an $\omega -\rho$ interaction. Our results indicate optimal ranges for some bulk parameters at the saturation density, namely, effective mass, incompressibility, and symmetry energy slope ($L_0$). For instance, we find $L_0=50.79_{-9.24}^{+15.16}$ MeV (Case 1) and $L_0=75.06_{-4.43}^{+8.43}$ MeV (Case 2) in a $68\%$ confidence interval for the 2 cases analyzed (different input ranges for $L_0$ related to the PREX-II data). The respective parametrizations are in agreement with important nuclear matter constraints, as well as observational neutron star data, such as the dimensionless tidal deformability of the GW170817 event. From the mass-radius curves obtained from these best parametrizations, we also find the ranges of $11.97 \mbox{ km}\leqslant R_{1.4}\leqslant 12.73 \mbox{ km}$ (Case 1) and $12.34 \mbox{ km}\leqslant R_{1.4}\leqslant 13.06 \mbox{ km}$ (Case 2) for the radius of the $1.4M_{\odot }$ neutron star.

12 pages, 11 figures, 7 tables

References in corpus (18)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• 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
• Tidal Love numbers of neutron stars
• Relativistic theory of tidal Love numbers
• Nuclear symmetry energy probed by neutron skin thickness of nuclei
• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817
• Neutron star mass and radius measurements from atmospheric model fits to X-ray burst cooling tail spectra
• Density dependence of the nuclear symmetry energy: a microscopic perspective
• Neutron matter from chiral two- and three-nucleon calculations up to N${}^3$LO
• Constraining the High-Density Behavior of Nuclear Symmetry Energy with the Tidal Polarizability of Neutron Stars
• Isospin-dependent properties of asymmetric nuclear matter in relativistic mean-field models
• Strong correlations of neutron star radii with the slopes of nuclear matter incompressibility and symmetry energy at saturation
• Dark matter effects on tidal deformabilities and moment of inertia in a hadronic model with short-range correlations
• A Neutron Star is born
• Bayesian refinement of covariant energy density functionals
• CREX- and PREX-II-motivated relativistic interactions and their implications for the bulk properties of nuclear matter and neutron stars