{
  "abstract": "We present a new family of Ricci-flat rotating metrics, which we refer to as Solution II, obtained by demagnetizing the genuine Kerr-Bertotti-Robinson (G-KBR) black hole. Together with Solution I, which was previously obtained by demagnetizing the Kerr-Bertotti-Robinson (KBR) black hole, this gives two families of Ricci-flat deformations of the Kerr black hole, each labeled by $B$. We study the global structures, thermodynamics, various limits, and the local connections among these limits. We also study the remagnetizations in both Einstein-Maxwell and Kaluza-Klein theories, and find that, to yield a physically acceptable solution, the Ernst transformation should be augmented by an appropriate trombone rescaling.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.30256",
  "author_total": 2,
  "authors": [
    {
      "name": "Liang Ma"
    },
    {
      "name": "H. Lu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0hwyczjgw7k7w.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.30256",
  "fulltext_url": null,
  "id": "0hwyczjgw7k7w",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.30256",
  "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",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7223304915",
  "pdf_url": "https://arxiv.org/pdf/2610.30256",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0hwyczjgw7k7w.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:22Z",
      "native_id": "2610.30256",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.30256"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Ricci-flat Seeds, Trombone Rescaling and Magnetizing Kerr Black Holes",
  "title_text": "Ricci-flat Seeds, Trombone Rescaling and Magnetizing Kerr Black Holes",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:44Z",
  "url": "https://research.draconitic.com/paper/0hwyczjgw7k7w",
  "venue": "arXiv",
  "versions": []
}