{
  "abstract": "Within the framework of quasi-topological gravity, we systematically investigate the correspondences among three classes of observables---the shadow, the quasinormal modes, and the graybody factors---of regular black holes in $D = 5$ dimensions. Using the WKB approximation and GrayHawk numerical integration, we test the applicability of the GBF--QNM correspondence and the shadow--GBF correspondence in the low-mode ($l=2$) and higher-dimensions ($D=5$): the difference between the GBF--QNM correspondence and the numerical results remains small in magnitude; we apply the known Langer correction (replacing $l$ by the effective angular momentum $κ= \\sqrt{l(l+D-3)} \\simeq l + (D-3)/2$), which reduces the error of the shadow--GBF correspondence at low modes to a level comparable with that of the GBF--QNM correspondence. Our work extends the shadow--GBF correspondence to higher-dimensional regular black holes, providing a viable route to predict the black hole spectrum and the Hawking radiation profile from a single observable, and thereby to realize multi-messenger tests of gravity.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.30169",
  "author_total": 3,
  "authors": [
    {
      "name": "Sihao Fan"
    },
    {
      "name": "Chen Wu"
    },
    {
      "name": "Wenjun Guo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6mw2hmj8sta05.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.30169",
  "fulltext_url": null,
  "id": "6mw2hmj8sta05",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.30169",
  "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": "W7204895515",
  "pdf_url": "https://arxiv.org/pdf/2608.30169",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-31",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6mw2hmj8sta05.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:41Z",
      "native_id": "2608.30169",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.30169"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Black hole correspondences of quasi-topological gravity : Shadows, quasinormal modes, graybody factors",
  "title_text": "Black hole correspondences of quasi-topological gravity : Shadows, quasinormal modes, graybody factors",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:41Z",
  "url": "https://research.draconitic.com/paper/6mw2hmj8sta05",
  "venue": "arXiv",
  "versions": []
}