Baryonic models of ultra-low-mass compact stars for the central compact object in HESS J1731-347

Abstract

The recent attempt on mass and radius inference of the central compact object within the supernova remnant HESS J1731-347 suggests for this object an unusually low mass of $M=0.77_{-0.17}^{+0.20}{M}_{\odot }$ and a small radius of $R=10.4_{-0.78}^{+0.86}$\,km. We explore the ways such a result can be accommodated within models of dense matter with heavy baryonic degrees of freedom which are constrained by the multi-messenger observations. We find that to do so using only purely nucleonic models, one needs to assume a rather small value of the slope of symmetry energy $L_{\mathrm{sym}}$. Once heavy baryons are included higher values of the slope $L_{\mathrm{sym}}$ become acceptable at the cost of a slightly reduced maximum mass of static configuration. These two scenarios are distinguished by the particle composition and will undergo different cooling scenarios. In addition, we show that the universalities of the $I$-Love-$Q$ relations for static configurations can be extended to very low masses without loss in their accuracy.

arXiv commentv2: matches published version, 8 pages, 6 figures

References in corpus (57)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• GW170817: Measurements of Neutron Star Radii and Equation of State
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• 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
• Masses, Radii, and Equation of State of Neutron Stars
• Properties of the binary neutron star merger GW170817
• A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
• Equations of state for supernovae and compact stars
• Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
• Recent Progress in Quantum Hadrodynamics
• Constraining the Maximum Mass of Neutron Stars From Multi-Messenger Observations of GW170817
• Using gravitational-wave observations and quasi-universal relations to constrain the maximum mass of neutron stars
• Tidal Deformabilities and Radii of Neutron Stars from the Observation of GW170817
• Accurate Determination of the Neutron Skin Thickness of ${}^{208}$Pb through Parity-Violation in Electron Scattering
• The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Dark Energy Camera Discovery of the Optical Counterpart
• The Combined Ultraviolet, Optical, and Near-Infrared Light Curves of the Kilonova Associated with the Binary Neutron Star Merger GW170817: Unified Data Set, Analytic Models, and Physical Implications
• PSR J0952-0607: The Fastest and Heaviest Known Galactic Neutron Star
• Implications of PREX-II on the equation of state of neutron-rich matter
• I-Love-Q
• Strangeness in nuclear physics
• Modeling GW170817 based on numerical relativity and its implications
• GW170817, General Relativistic Magnetohydrodynamic Simulations, and the Neutron Star Maximum Mass
• Approximate Universal Relations for Neutron Stars and Quark Stars
• Hyperons and massive neutron stars: vector repulsion and SU(3) symmetry
• Electromagnetic excitation of the Delta(1232)-resonance
• How well do we know the neutron-matter equation of state at the densities inside neutron stars? A Bayesian approach with correlated uncertainties
• Constraint on the maximum mass of neutron stars using GW170817 event
• Precision Determination of the Neutral Weak Form Factor of ${}^{48}$Ca
• Hyperons and massive neutron stars: the role of hyperon potentials
• Pulsar J0453+1559: A Double Neutron Star System with a Large Mass Asymmetry
• Constraints on the neutron star equation of state from AT2017gfo using radiative transfer simulations
• GW190814: Impact of a 2.6 solar mass neutron star on nucleonic equations of state
• The equation of state for dense nucleonic matter from a meta-modeling. II. Predictions for neutron stars properties
• Combined Constraints on the Equation of State of Dense Neutron-Rich Matter from Terrestrial Experiments and Observations of Neutron Stars
• On the minimum mass of neutron stars
• Revisiting the lower bound on tidal deformability derived by AT 2017gfo
• Information content of the parity-violating asymmetry in ${}^{208}$Pb
• (No) neutron star maximum mass constraint from hypernuclei
• Equation of state of hypernuclear matter: impact of hyperon--scalar-meson couplings
• Equation of State for Nucleonic and Hyperonic Neutron Stars with Mass and Radius Constraints
• Competition between delta isobars and hyperons and properties of compact stars
• Combined theoretical analysis of the parity-violating asymmetry for ${}^{48}$Ca and ${}^{208}Pb$
• Heavy Baryons in Compact Stars
• New equations of state constrained by nuclear physics, observations, and QCD calculations of high-density nuclear matter
• Confronting GW190814 with hyperonization in dense matter and hypernuclear compact stars
• Implications from GW170817 for $\Delta$-isobar admixed hypernuclear compact stars
• Relativistic hybrid stars with sequential first-order phase transitions and heavy-baryon envelopes
• A light strange star in the remnant HESS J1731-347: minimal consistency checks
• Interplay between $\Delta$ Particles and Hyperons in Neutron Stars
• Maximum mass of compact stars from gravitational wave events with finite-temperature equations of state
• Hypernuclear stars from relativistic Hartree-Fock density functional theory
• Rapidly rotating $\Delta$-resonance-admixed hypernuclear compact stars
• Constraining compact star properties with nuclear saturation parameters
• $\Delta$-admixed neutron stars: spinodal instabilities and dUrca processes
• Model-independent constraints on superfluidity from the cooling neutron star in Cassiopeia A

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• Relativistic mean field model for ultra-compact low mass neutron star of HESS J1731-347
• Hybrid stars in light of the HESS J1731-347 remnant and the PREX-II experiment
• Speed of sound bounds and first-order phase transitions in compact stars
• Confronting new NICER mass-radius measurements with phase transition in dense matter and twin compact stars
• Two-flavor color superconducting quark stars may not exist
• How the HESS J1731-347 event could be explained using ${\mathbf{K}}^{-}$ condensation
• Bayesian inferences on covariant density functionals from multimessenger astrophysical data: Nucleonic models
• Exploring $\Delta$-resonance in neutron stars: implications from astrophysical and nuclear observations
• Observational Probes of the Neutron Star Equation of State with Hyperons, Bosonic Dark Matter, and Quark Matter
• Confronting recent light compact star observations with color-flavor locked quark matter
• Properties of the Object HESS J1731-347 as a Twin Compact Star
• On the Cooling of Compact Stars in Light of the HESS J1731-347 Remnant