Maximal Mass Neutron Star as a Key to Superdense Matter Physics
arXiv:2310.16847 · doi:10.1134/S1063773723100055
Abstract
We propose a universal approximation of the equation of state of superdense matter in neutron star (NS) interiors. It contains only two parameters, the pressure and the density at the center of the maximally massive neutron star. We demonstrate the validity of this approximation for a wide range of different types of equations of state, including both baryonic and hybrid models. Combined with recently discovered correlations of internal (density, pressure, and speed of sound at the center) and external (mass, radius) properties of a maximally massive neutron star, this approximation turns out to be an effective tool for determining the equation of state of superdense matter using astrophysical observations.
arXiv comment13 pages, 5 figures, 2 tables. Various improvements according to feedback and proof reading. Data for the JJ EoSs is corrected w.r.t. the journal version
References in corpus (25)
- Shapiro delay measurement of a two solar mass neutron star
- A Massive Pulsar in a Compact Relativistic Binary
- Multi-messenger Observations of a Binary Neutron Star Merger
- Neutron Star Structure and the Equation of State
- Masses, Radii, and Equation of State of Neutron Stars
- Gravitational-wave constraints on the neutron-star-matter Equation of State
- Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
- Constraints on a phenomenologically parameterized neutron-star equation of state
- Using gravitational-wave observations and quasi-universal relations to constrain the maximum mass of neutron stars
- The Equation of State of Hot, Dense Matter and Neutron Stars
- I-Love-Q Relations in Neutron Stars and their Applications to Astrophysics, Gravitational Waves and Fundamental Physics
- I-Love-Q
- Analytical representations of unified equations of state for neutron-star matter
- Spectral Representations of Neutron-Star Equations of State
- Moments of inertia for neutron and strange stars: limits derived for the Crab pulsar
- Cooling rates of neutron stars and the young neutron star in the Cassiopeia A supernova remnant
- Cooling of Akmal-Pandharipande-Ravenhall neutron star models
- Bayesian analysis of neutron-star properties with parameterized equations of state: the role of the likelihood functions
- Physics input for modelling superfluid neutron stars with hyperon cores
- Analytic I-Love-C relations for realistic neutron stars
- Thermal emission of neutron stars with internal heaters
- An Optical Study of the Black Widow Population
- Bulk viscosity in neutron stars with hyperon cores
- Universal properties of maximum-mass neutron stars: a new tool to explore superdense matter
- Core States of Neutron Stars from Anatomizing their Scaled Structure Equations
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- Novel Scalings of Neutron Star Properties from Analyzing Dimensionless Tolman--Oppenheimer--Volkoff Equations
- Towards constraining QCD phase transitions in neutron star interiors: Bayesian Inference with TOV linear response analysis
- Strong Gravity Extruding Peaks in Speed of Sound Profiles of Massive Neutron Stars
- Correlations between the Neutron Star Mass-Radius Relation and the Equation of State of Dense Matter
- New Insights into Supradense Matter from Dissecting Scaled Stellar Structure Equations