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The existence of a two-solar mass neutron star constrains the gravitational constant G_N at strong field

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Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
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Antonio Dobado, Felipe J. Llanes-Estrada (U. Complutense Madrid), Jose Antonio Oller (U. Murcia)

General Relativity and Quantum Cosmology · Submitted 28 Jul 2011

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The discovery of a two-solar mass neutron star, near that maximum mass, when analyzed with modern equations of state, implies that Newton's gravitational constant in the star cannot exceed its value on Earth by more than 8% at 95% confidence level.

how it is stated · asserted 0.83 read the record →

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arXiv ID1107.5707 (version 1)
Pith IDTJ7P2Z2L, Pith's permanent record of this paper and its review
CitationAntonio Dobado, Felipe J. Llanes-Estrada (U. Complutense Madrid), Jose Antonio Oller (U. Murcia). "The existence of a two-solar mass neutron star constrains the gravitational constant G_N at strong field." arXiv:1107.5707 (2011). https://pith.science/paper/TJ7P2Z2L
Claim paper

The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

Open the compiled record

Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,636 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.08 · states limitation 0.32 · human participants 0.01 · controlled comparison 0.15 · randomized assignment 0.01 · states quantitative result 0.98 · compares with prior results 0.50 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

In General Relativity there is a maximum mass allowed for neutron stars that, if exceeded, entails their collapse into a black hole. Its precise value depends on details of the nuclear matter equation of state about which we are much more certain thanks to recent progress in low-energy effective theories. The discovery of a two-solar mass neutron star, near that maximum mass, when analyzed with modern equations of state, implies that Newton's gravitational constant in the star cannot exceed its value on Earth by more than 8% at 95% confidence level. This is a remarkable leap of ten orders of magnitude in the gravitational field intensity at which the constant has been constrained.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 In General Relativity there is a maximum mass allowed for neutron stars that, if exceeded, entails their collapse into a black hole. background 1.00 0.05 0.03 asserted 1.00
s1 Its precise value depends on details of the nuclear matter equation of state about which we are much more certain thanks to recent progress in low-energy effective theories. background 0.98 0.06 0.02 asserted 0.99
s2 The discovery of a two-solar mass neutron star, near that maximum mass, when analyzed with modern equations of state, implies that Newton's gravitational constant in the star cannot exceed its value on Earth by more than 8% at 95% confidence level. result 0.98 0.74 0.95 asserted 0.83
s3 This is a remarkable leap of ten orders of magnitude in the gravitational field intensity at which the constant has been constrained. interpretation 0.99 0.72 0.08 asserted 1.00

What kind of paper the classifier reports this is: theoretical result 0.93 · evidence from analysis of existing data 0.78.

What was examined, and what was not

sources read
  • arXiv listing abstract v1
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

In General Relativity there is a maximum mass allowed for neutron stars that, if exceeded, entails their collapse into a black hole. Its precise value depends on details of the nuclear matter equation of state about which we are much more certain thanks to recent progress in low-energy effective theories. The discovery of a two-solar mass neutron star, near that maximum mass, when analyzed with modern equations of state, implies that Newton's gravitational constant in the star cannot exceed its value on Earth by more than 8% at 95% confidence level. This is a remarkable leap of ten orders of magnitude in the gravitational field intensity at which the constant has been constrained.

Human review

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How the literature uses it

7 arXiv papers cite this in 10 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 9 sentences without a confident label

Cites it as background 1 paper

What it cites · 19 sentences without a confident label

Compares with 2 papers

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