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Conditional neutron-star radius and tidal-deformability inference from GW170817

A Bayesian reanalysis of the GW170817 gravitational-wave signal constrained the binary tidal deformability and inferred an approximately common neutron-star radius. Under a shared equation-of-state approximation, electromagnetic location and distance, and three mass priors, the authors reported radius posteriors centered near 10.8 km; their appended erratum corrected the comparison of models with and without the common-equation-of-state constraint.

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A Bayesian reanalysis of the GW170817 gravitational-wave signal constrained the binary tidal deformability and inferred an approximately common neutron-star radius. Under a shared equation-of-state approximation, electromagnetic location and distance, and three mass priors, the authors reported radius posteriors centered near 10.8 km; their appended erratum corrected the comparison of models with and without the common-equation-of-state constraint.

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Scientific scope

The radius is a model-dependent inference from gravitational waves, not a direct image or a universal radius measurement. The analysis assumes approximately equal radii and a q⁶ deformability relation in the relevant mass range, a causal lower bound, low spins and a specific post-Newtonian waveform. The erratum withdraws the reported strong model preference: revised Bayes factors are of order unity, while the authors state their parameter estimates remain unchanged.

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People and systems

Soumi De; Daniel Finstad; James M. Lattimer; Duncan A. Brown; Edo Berger; Christopher M. Biwer

These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.

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English catalogue narrative

Conditional neutron-star radius and tidal-deformability inference from GW170817

A Bayesian reanalysis of the GW170817 gravitational-wave signal constrained the binary tidal deformability and inferred an approximately common neutron-star radius. Under a shared equation-of-state approximation, electromagnetic location and distance, and three mass priors, the authors reported radius posteriors centered near 10.8 km; their appended erratum corrected the comparison of models with and without the common-equation-of-state constraint.

Scientific scope

The radius is a model-dependent inference from gravitational waves, not a direct image or a universal radius measurement. The analysis assumes approximately equal radii and a q⁶ deformability relation in the relevant mass range, a causal lower bound, low spins and a specific post-Newtonian waveform. The erratum withdraws the reported strong model preference: revised Bayes factors are of order unity, while the authors state their parameter estimates remain unchanged.

Reading status

This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.

People and systems

Soumi De; Daniel Finstad; James M. Lattimer; Duncan A. Brown; Edo Berger; Christopher M. Biwer

These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.

Original sources