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Neutron Star Observations: Prognosis for Equation of State Constraints

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arxiv astro-ph/0612440 v1 pith:AX4MJWX3 submitted 2006-12-15 astro-ph nucl-th

classification astro-phnucl-th
keywords neutronstarobservationsstateequationleadmademass
verification ladder T0 review T1 audit T2 compute T3 formal

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We investigate how current and proposed observations of neutron stars can lead to an understanding of the state of their interiors and the key unknowns: the typical neutron star radius and the neutron star maximum mass. A theoretical analysis of neutron star structure, including general relativistic limits to mass, compactness, and spin rates is made. We consider observations made not only with photons, ranging from radio waves to X-rays, but also those involving neutrinos and gravity waves. We detail how precision determinations of structural properties would lead to significant restrictions on the poorly understood equation of state near and beyond the equilibrium density of nuclear matter.

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Cited by 13 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. How Neutron Star Radii Encode the Dense-Matter Equation of State and Hadron-Quark Transition

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    The Guitar nebula's pulsar appears to accelerate electrons to within ~3/4 of the theoretical maximum potential, and its brightness is best explained by the pulsar crossing an old supernova remnant's compressed, magnet...

  5. Inferring neutron-star Love-Q relations from gravitational waves in the hierarchical Bayesian framework

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    Hierarchical Bayesian inference on 20 high-SNR simulated binary neutron star events shows a linear lnΛ-lnQ relation suffices and constrains dynamical Chern-Simons gravity length scale to ≤10 km.

  6. Unified QMF equation of state for neutron star matter: Static and dynamic properties

    nucl-th 2025-05 conditional novelty 6.0 of 10

    The quark mean-field model predicts larger crust clusters and a slower direct-Urca cooling phase than the relativistic mean-field model, while both reproduce the observed crustal cooling of the transient KS 1731-260.

  7. Rotational effects in quark stars: comparing different models

    astro-ph.HE 2025-11 unverdicted novelty 5.0 of 10

    Rotation amplifies differences between the vector MIT bag and DDQM equations of state for quark stars, with MIT supporting more massive stars and a full decomposition of gravitational, internal, rotational, and bindin...

  8. Gravitational Bounce from the Quantum Exclusion Principle

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  9. Measuring the neutron star equation of state with gravitational waves: the first forty binary neutron star mergers

    gr-qc 2019-09 conditional novelty 5.0 of 10

    A mock-data study projects that forty binary neutron star detections, dominated by the eight loudest events, will constrain the 1.4-solar-mass neutron star radius to about 10% and the pressure at twice nuclear saturat...

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    gr-qc 2026-07 conditional novelty 4.0 of 10

    A large-tension braneworld with α_U ≈ −0.15 fits NICER and GW170817 data for SLy, raising M_max to ~2.30 M_⊙ and R_1.4 to ~13.3 km relative to GR.

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    The Lee-Huang-Yang beyond-mean-field correction measurably reduces the dimensionless moment of inertia of slowly rotating BEC dark stars at fixed compactness while preserving the I-Love universal relation to within a ...

  12. On the effect of higher order symmetry energy corrections in Skyrme models for neutron star matter

    nucl-th 2026-06 unverdicted novelty 4.0 of 10

    Higher-order isospin corrections in Skyrme EOSs significantly modify composition-sensitive quantities like proton fraction and chemical potential difference at supra-nuclear densities but leave bulk thermodynamic prop...

  13. The compact neutron star in 4U 1746-37 revisited: Reassessing the mass and radius

    astro-ph.HE 2026-05 unverdicted novelty 4.0 of 10

    Significant X-ray flux blocking in 4U 1746-37 allows the neutron star to have canonical mass and radius values of 1.59 solar masses and 13 km or 2.12 solar masses and 9.8 km.

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