{
  "abstract": "We establish a charge-regular formulation of separated Kerr--Newman perturbations and an explicit map from master solutions to physical radiative fields. We derive regular angular and radial first-order systems and their second-order reductions, with finite-charge deformations of the spin $\\pm1$ and $\\pm2$ Teukolsky equations. The field and boundary normalizations recover the standard Kerr conventions while accounting for the nonuniform zero-charge limit at infinity. For physical Einstein--Maxwell perturbations with the usual peeling behavior, we obtain explicit outgoing gravitational and electromagnetic amplitudes and energy fluxes at nonzero real frequency. The resulting finite-charge radiation-composition ratios depend only on the regular angular functions, independently of the radial excitation.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10529",
  "author_total": 1,
  "authors": [
    {
      "name": "Hayato Motohashi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e8x4bgy84b5zv.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10529",
  "fulltext_url": null,
  "id": "e8x4bgy84b5zv",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.10529",
  "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"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7220981141",
  "pdf_url": "https://arxiv.org/pdf/2610.10529",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e8x4bgy84b5zv.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:37Z",
      "native_id": "2610.10529",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10529"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Charge-regular formulation and radiative amplitudes of Kerr-Newman perturbations",
  "title_text": "Charge-regular formulation and radiative amplitudes of Kerr-Newman perturbations",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:37Z",
  "url": "https://research.draconitic.com/paper/e8x4bgy84b5zv",
  "venue": "arXiv",
  "versions": []
}