Pith. sign in

REVIEW 4 cited by

Implications of latest NICER data for the neutron star equation of state

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2412.05923 v2 pith:EUUN677E submitted 2024-12-08 nucl-th astro-ph.HEgr-qcnucl-ex

Len Brandes , Wolfram Weise This is my paper · ORCID
classification nucl-thastro-ph.HEgr-qcnucl-ex
keywords neutronodotdatavaluescentraldensitiesdensitylevel
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

As an update to our previously performed Bayesian inference analyses of the neutron star matter equation-of-state and related quantities, the additional impact of the recently published NICER data of PSR J0437-4751 is examined. Including the mass and radius distributions of this pulsar in our data base results in modest shifts from previously inferred median posterior values of radii $R$ and central densities $n_c$ for representative $1.4\,M_\odot$ and $2.1\,M_\odot$ neutron stars: radii are reduced by about $0.2-0.3$ km to values of $R_{1.4} = 12.1\pm 0.5$ km and $R_{2.1} = 11.9^{+0.5}_{-0.6}$ km (at the 68\% level), and central densities increase slightly to values of $n_c(1.4\,M_\odot)/n_0 = 2.8\pm 0.3$ and $n_c(2.1\,M_\odot)/n_0 = 3.8_{-0.7}^{+0.6}$ (in units of equilibrium nuclear matter density, $n_0 = 0.16$ fm$^{-3}$), i.e., they still fall below five times nuclear saturation density at the 68\% level. As a further significant result, the evidence established by analyzing Bayes factors for a negative trace anomaly measure, $\Delta = 1/3-P/\varepsilon < 0$, inside heavy neutron stars is raised to strong.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 4 Pith papers

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

  1. Short GRB 090510: a magnetized neutron star binary merger leading to a black hole

    astro-ph.HE 2025-09 conditional novelty 6.0 of 10

    GRB 090510 is modeled as a merger of two ~1.2 solar mass neutron stars that forms a spinning 2.36 solar mass black hole, with each emission phase traced to a different energy source.

  2. Quarkyonic Quark-Meson Coupling Model for Nuclear and Neutron Matter

    nucl-th 2025-12 conditional novelty 5.0 of 10

    A quark-based nuclear matter model combining quarkyonic Pauli blocking with quark-meson coupling can be tuned to reproduce neutron-star and heavy-ion constraints.

  3. Quantifying the Information Gain from Future High-Precision Radius Measurements for Identifying Twin Neutron Stars

    astro-ph.HE 2026-07 reject novelty 4.0 of 10

    The paper claims a radius precision of ~0.2 km is enough to extract most Bayesian information for identifying twin neutron stars, but its own distinguishability and entropy analyses suggest notable gains remain down t...

  4. Compact stars in a large-tension braneworld: mildly negative Weyl coupling consistent with NICER and gravitational-wave data

    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.

Pith tools