{
  "abstract": "We study the impact of new mass-radius information from PSR J1614-2230, PSR J2124-3358, and 47 Tuc X7 in a combined equation of state inference based on chiral effective field theory constraints at nuclear densities and using different high-density extensions, including perturbative QCD constraints. The largest impact stems from the heavy-mass PSR J1614-2230 star, which shifts heavy neutron stars to smaller radii by around 0.4 km. Moreover, the combined astrophysical NICER, LIGO/Virgo, and X-ray information drives the radius posterior to a more data-driven distribution, which is less sensitive to the high-density extension. For the equation of state, the new mass-radius information significantly tightens the pressure and speed-of-sound posterior distributions, especially around three times saturation density. Finally, we make predictions for the poorly constrained masses of PSR J2124-3358 and 47 Tuc X7 based on the combined equation of state analysis and the other astrophysical sources.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.00173",
  "author_total": 12,
  "authors": [
    {
      "name": "Melissa Mendes"
    },
    {
      "name": "Isak Svensson"
    },
    {
      "name": "Hannah Gottling"
    },
    {
      "name": "Kai Hebeler"
    },
    {
      "name": "Achim Schwenk"
    },
    {
      "name": "Nathan Rutherford"
    },
    {
      "name": "Lucien Mauviard"
    },
    {
      "name": "Christine Kazantsev"
    },
    {
      "name": "Yves Kini"
    },
    {
      "name": "Denis Gonzalez-Caniulef"
    },
    {
      "name": "Sebastien Guillot"
    },
    {
      "name": "Anna Watts"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2v8g1zvwhp9st.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.00173",
  "fulltext_url": null,
  "id": "2v8g1zvwhp9st",
  "issns": [],
  "landing_url": "https://hal.science/hal-05758429v1",
  "language": "en",
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  "licence_label": "arXiv licence",
  "licence_source": "article",
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  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.HE"
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      "nucl-ex"
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      "nucl-th"
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      "1.phys.astr"
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    [
      "hal",
      "1.phys.nexp"
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    [
      "hal",
      "1.phys.nucl"
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    [
      "openalex",
      "3103|Pulsars and Gravitational Waves Research"
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  "openalex": "W7206181211",
  "pdf_url": "https://arxiv.org/pdf/2609.00173",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2v8g1zvwhp9st.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:37Z",
      "native_id": "hal-05758429",
      "source": "hal",
      "url": "https://hal.science/hal-05758429v1"
    },
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "2609.00173",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.00173"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-ex",
      "subfield": "nuclear"
    }
  ],
  "title": "Equation of state and neutron star properties with new mass-radius constraints from PSR~J1614--2230, PSR~J2124--3358, and 47~Tuc~X7",
  "title_text": "Equation of state and neutron star properties with new mass-radius constraints from PSR~J1614--2230, PSR~J2124--3358, and 47~Tuc~X7",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/2v8g1zvwhp9st",
  "venue": "HAL",
  "versions": []
}