{
  "abstract": "In this manuscript, we study circular geodesics and twin-peak high-frequency quasi-periodic oscillations (HF-QPOs) in the charged Simpson--Visser--anti-de Sitter (AdS) spacetime, which depends on a charge parameter $Q$, a regularization scale $b$ and an AdS radius $l$. Written in terms of the areal radius $R=\\sqrt{r^{2}+b^{2}}$, the specific energy, angular momentum, Keplerian frequency and innermost stable circular orbit (ISCO) of test particles coincide with those of the Reissner--Nordström--AdS black hole, so $b$ enters the epicyclic spectrum only through a factor $1-b^{2}/R^{2}$ in the radial frequency. We give this frequency and the ISCO condition in closed form. We then fit the relativistic-precession model to the HF-QPO pairs of GRO~J1655$-$40 and XTE~J1550$-$564, with their dynamical masses included as Gaussian priors. The Schwarzschild limit gives $χ^{2}=32.9$ for two degrees of freedom. One additional deformation removes this tension: $Q/M=0.814^{+0.059}_{-0.074}$ at fixed $l=100M$, or $l=40.6^{+6.2}_{-4.8}\\,M$ at $Q=0$, both with $χ^{2}\\simeq0.13$. These two solutions lie on a single degeneracy valley in the $(Q,l)$ plane, and, at $l=100M$, $b$ is left unconstrained up to $b\\simeq3.9M$ (68\\%), a limit set by the charge prior rather than by the data. A Kerr black hole with spin $a\\simeq0.3$--$0.4$ reproduces the same pairs, so the inferred deformation most likely absorbs the spin neglected by the static metric. Our results therefore describe degeneracies among orbital-frequency deformations; they are not a measurement of an electric charge or of a cosmological constant.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.31534",
  "author_total": 6,
  "authors": [
    {
      "name": "Saeed Ullah Khan"
    },
    {
      "name": "Javlon Rayimbaev"
    },
    {
      "name": "Muhammad Zahid"
    },
    {
      "name": "Tolaniddin Nurmukhamedov"
    },
    {
      "name": "Abat Muratov"
    },
    {
      "name": "Weiwei Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7nt13f46na1qb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.31534",
  "fulltext_url": null,
  "id": "7nt13f46na1qb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.31534",
  "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-ph"
    ],
    [
      "openalex",
      "3103|Astrophysical Phenomena and Observations"
    ]
  ],
  "openalex": "W7223338984",
  "pdf_url": "https://arxiv.org/pdf/2610.31534",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7nt13f46na1qb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.31534",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.31534"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Testing charged Simpson-Visser-AdS spacetimes with twin-peak QPOs",
  "title_text": "Testing charged Simpson-Visser-AdS spacetimes with twin-peak QPOs",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/7nt13f46na1qb",
  "venue": "arXiv",
  "versions": []
}