Baryonic models of ultra-low-mass compact stars for the central compact object in HESS J1731-347
arXiv:2306.14185 · doi:10.1016/j.physletb.2023.138062
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 and a small radius of \,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 . Once heavy baryons are included higher values of the slope 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 -Love- relations for static configurations can be extended to very low masses without loss in their accuracy.
v2: matches published version, 8 pages, 6 figures
References in corpus (17)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- GW190814: Gravitational Waves from the Coalescence of a 23 M Black Hole with a 2.6 M 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
- Constraining the Maximum Mass of Neutron Stars From Multi-Messenger Observations of GW170817
- 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
- Modeling GW170817 based on numerical relativity and its implications
- Electromagnetic excitation of the Delta(1232)-resonance
- Revisiting the lower bound on tidal deformability derived by AT 2017gfo
- Equation of State for Nucleonic and Hyperonic Neutron Stars with Mass and Radius Constraints
- Implications from GW170817 for -isobar admixed hypernuclear compact stars
- Confronting GW190814 with hyperonization in dense matter and hypernuclear compact stars
- A light strange star in the remnant HESS J1731-347: minimal consistency checks
- -admixed neutron stars: spinodal instabilities and dUrca processes
- Model-independent constraints on superfluidity from the cooling neutron star in Cassiopeia A