{
  "abstract": "Fast analytic and semi-analytic studies of neutron stars often require an equation of state that is convenient to evaluate while producing relativistic stellar sequences compatible with current multimessenger constraints. We construct such a benchmark by scanning a smooth double polytropic relation for the energy density as a function of pressure, $\\hatε(\\hat p)=a_1\\hat p^{Γ_1}+a_2\\hat p^{Γ_2}$. The parameters are selected with filters based on massive pulsars, tidal deformability from the binary-neutron-star event GW170817, and NICER mass-radius measurements. A single polytropic baseline scan finds no model passing all filters, whereas a double-polytrope scan identifies a viable region. A curve-integral score, evaluated against public NICER and GW170817 posterior data sets, is then used to choose benchmark equations of state within this region. The selected representatives support $M_{\\max}=2.44$--$2.49\\,M_\\odot$, with $R_{1.4}\\simeq 11.3$ km and $Λ_{1.4}=485$--$512$, and remain causal on the stable branch. This compact analytic family provides reference cases for relativistic stellar-structure tests at current observational scales.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Tian-Shun Chen et al 2026 ApJ 1009 227",
  "arxiv": "2607.00070",
  "author_total": 3,
  "authors": [
    {
      "name": "Tian-Shun Chen"
    },
    {
      "name": "Xiao-Ding Zhou"
    },
    {
      "name": "Kilar Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dfx48xfd54jv4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.00070",
  "fulltext_url": null,
  "id": "dfx48xfd54jv4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.00070",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2607.00070",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dfx48xfd54jv4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2607.00070",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.00070"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "An Analytical Toy Equation of State for Neutron Stars Consistent with Current Observations",
  "title_text": "An Analytical Toy Equation of State for Neutron Stars Consistent with Current Observations",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/dfx48xfd54jv4",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.3847/1538-4357/aea217",
      "pid": "0g1ntq867ctx7",
      "relation": "published-as",
      "title": "An Analytical Toy Equation of State for Neutron Stars Consistent with Current Observations",
      "venue": "The Astrophysical Journal"
    }
  ]
}