Progress in constraining nuclear symmetry energy using neutron star observables since GW170817

BA Li, BJ Cai, WJ Xie, NB Zhang - Universe, 2021 - mdpi.com
The density dependence of nuclear symmetry energy is among the most uncertain parts of
the Equation of State (EOS) of dense neutron-rich nuclear matter. It is currently poorly known …

Heavy baryons in compact stars

A Sedrakian, JJ Li, F Weber - Progress in Particle and Nuclear Physics, 2023 - Elsevier
We review the physics of hyperons and Δ-resonances in dense matter in compact stars. The
covariant density functional approach to the equation of state and composition of dense …

GW190814's secondary component with mass 2.50–2.67 M⊙ as a superfast pulsar

NB Zhang, BA Li - The Astrophysical Journal, 2020 - iopscience.iop.org
We use Stergioulas's RNS code for investigating fast pulsars with equations of state (EOSs)
on the causality surface (where the speed of sound is equal to that of light) of the high …

Relativistic description of dense matter equation of state and compatibility with neutron star observables: a Bayesian approach

T Malik, M Ferreira, BK Agrawal… - The Astrophysical …, 2022 - iopscience.iop.org
The general behavior of the nuclear equation of state (EOS), relevant for the description of
neutron stars (NSs), is studied within a Bayesian approach applied to a set of models based …

Bayesian inference of high-density nuclear symmetry energy from radii of canonical neutron stars

WJ Xie, BA Li - The Astrophysical Journal, 2019 - iopscience.iop.org
The radius R 1.4 of neutron stars (NSs) with a mass of 1.4 M⊙ has been extracted
consistently in many recent studies in the literature. Using representative R 1.4 data, we infer …

Confronting GW190814 with hyperonization in dense matter and hypernuclear compact stars

A Sedrakian, F Weber, JJ Li - Physical Review D, 2020 - APS
We examine the possibility that the light companion in the highly asymmetric binary compact
object coalescence event GW190814 is a hypernuclear star. We use density functional …

Bayesian inference of signatures of hyperons inside neutron stars

T Malik, C Providência - Physical Review D, 2022 - APS
The possible signatures of the presence of hyperons inside neutron stars are discussed
within a Bayesian inference framework applied to a set of models based on a density …

Bayesian inference of the symmetry energy of superdense neutron-rich matter from future radius measurements of massive neutron stars

WJ Xie, BA Li - The Astrophysical Journal, 2020 - iopscience.iop.org
Using as references the posterior probability distribution functions of the equation of state
(EOS) parameters inferred from the radii of canonical neutron stars (NSs) reported by the …

Relativistic hypernuclear compact stars with calibrated equations of state

M Fortin, AR Raduta, S Avancini, C Providência - Physical Review D, 2020 - APS
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 …

Interplay between delta particles and hyperons in neutron stars

P Ribes, A Ramos, L Tolos… - The Astrophysical …, 2019 - iopscience.iop.org
We analyze the effects of including Δ (1232) isobars in an equation of state (EoS) for cold, β-
stable neutron star (NS) matter, employing relativistic nuclear mean field theory. The …