{
  "abstract": "In this paper, we derive the complete transformations of a generic first order perturbative metric in Schwarzschild spacetime to the Newman-Unti (NU) gauge in series expansion near null infinity. This allows us to determine the asymptotic shear, the mass aspect and the angular momentum aspect of the perturbative fields. As a direct application, we derive the corresponding asymptotic NU data for quasinormal modes (QNMs) of a Schwarzschild black hole. The total energy and angular momentum of QNMs obtained from the asymptotic NU data vanish but classical supertranslation charges are non-trivial, which can be applied to fix the BMS frame at first perturbative order.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.15730",
  "author_total": 3,
  "authors": [
    {
      "name": "Pujian Mao"
    },
    {
      "name": "Baijun Zeng"
    },
    {
      "name": "Kai-Yu Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3zb9m6ee8t2rp.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.15730",
  "fulltext_url": null,
  "id": "3zb9m6ee8t2rp",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.15730",
  "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": "W7213237477",
  "pdf_url": "https://arxiv.org/pdf/2609.15730",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3zb9m6ee8t2rp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:25Z",
      "native_id": "2609.15730",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.15730"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Perturbations of a Schwarzschild black hole and Newman-Unti gauge",
  "title_text": "Perturbations of a Schwarzschild black hole and Newman-Unti gauge",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:25Z",
  "url": "https://research.draconitic.com/paper/3zb9m6ee8t2rp",
  "venue": "arXiv",
  "versions": []
}