Neutron star universal relations with microscopic equations of state

2018/09/30 by J. -B. Wei, J-B Wei, A. Figura +5 · 60 citations
Earth and Planetary Sciences · Mathematics · Physics and Astronomy · #Astrophysics #Binary number #Classical mechanics #Equation of state #Gamma-ray bursts and supernovae #Geophysics and Gravity Measurements #Mathematics #Moment of inertia #Neutron #Neutron star #Nuclear physics #Observable #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Star (game theory) #State (computer science) #X-ray binary #astro-ph.HE #nucl-th

paper · pdf · doi:10.1088/1361-6471/aaf95c

published in Journal of Physics G Nuclear and Particle Physics 46(3), 034001 (IOP Publishing) · 18 pages, 5 figures, version accepted on Journal of Physics G : Nuclear and Particle Physics, Special issue on "Hadrons and Gravitational Waves after GW170817"

arxiv created 2018/12/15 · openalex publication_date 2018/12/18 · arxiv updated 2019/01/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We calculate neutron star’s moment of inertia and deformabilities using various microscopic equations of state for nuclear and hybrid star configurations. We confirm several universal relations between the various observables in these cases. We focus in particular on the constraints for the neutron star radii imposed by a determination of the average tidal deformability of the binary neutron star system GW170817. We find compatible radii between 12 and 13 kilometers and identify the suitable equations of state.

Citations

• Multipole moments of stationary space-times
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• Neutron Star Structure and the Equation of State
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• Modern theory of nuclear forces
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• Binary Neutron Star Mergers
• I-Love-Q relations in neutron stars and their applications to astrophysics, gravitational waves, and fundamental physics
• A Massive Pulsar in a Compact Relativistic Binary
• Masses, Radii, and the Equation of State of Neutron Stars
• Microscopic nuclear equation of state with three-body forces and neutron\n star structure
• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger

Cited by

• Constraints on Nuclear Saturation Properties from Terrestrial Experiments and Astrophysical Observations of Neutron Stars
• Gravitational waves from neutron star mergers and their relation to the nuclear equation of state