{
  "abstract": "We identify the general finite-$\\ell$ neutral Alekseev--Astorino Schwarzschild--Bertotti--Robinson family with the subcritical branch of the independently obtained accelerating Schwarzschild--Bertotti--Robinson solution. The exact scale-free dictionary is \\begin{equation*} B^2M^2=\\frac{m^2}{b^2+\\ell^2},\\qquad AM=\\frac{m\\ell}{b^2+\\ell^2},\\qquad \\frac{A}{B}=\\frac{\\ell}{\\sqrt{b^2+\\ell^2}}, \\end{equation*} up to the north--south orientation convention. Thus finite real $\\ell$ covers precisely the acceleration interval $|A|<|B|$: for $\\ell\\ne0$ the corresponding OP acceleration parameter is nonzero and the two axial openings are unequal, although no acceleration horizon is present. We establish the identification by canonical Weyl-rod matching and horizon-shape comparison, an independent conicity check, and an exact off-horizon reconstruction of the metric and Maxwell field. The centered limit $\\ell=0$ is the nonaccelerating Schwarzschild--BR solution, whereas $|\\ell|\\to\\infty$ approaches the critical boundary $|A/B|=1$ from below. The Astorino parameter $\\ell$ therefore parametrizes subcritical acceleration rather than an additional independent neutral black-hole degree of freedom.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.31035",
  "author_total": 1,
  "authors": [
    {
      "name": "Kenneth Hong"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8d5b7tcyker5d.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.31035",
  "fulltext_url": null,
  "id": "8d5b7tcyker5d",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.31035",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7223358804",
  "pdf_url": "https://arxiv.org/pdf/2610.31035",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8d5b7tcyker5d.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.31035",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.31035"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "The subcritical accelerating Schwarzschild-Bertotti-Robinson family",
  "title_text": "The subcritical accelerating Schwarzschild-Bertotti-Robinson family",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/8d5b7tcyker5d",
  "venue": "arXiv",
  "versions": []
}