{
  "abstract": "We study the shadow and strong-field optical properties of a static, spherically symmetric dyon-like dilatonic black hole. The photon sphere radius, critical impact parameter, and shadow radius are obtained and analyzed in terms of the charge $Q$ and the dilatonic coupling parameter $a$. We show that increasing these parameters decreases the photon sphere and shadow radii, leading to a smaller apparent shadow. The predicted angular diameter is compared with the observational data for M87$^{*}$ and SgrA$^{*}$. We explicitly show that the Sgr A* data do not constrain the model parameters, whereas the results for M87* depend on the adopted mass estimates from stellar and gas dynamics. We also estimate the high-frequency energy emission rate in the geometric-optics approximation and derive the leading Bozza coefficient $\\bar{a}$, which characterizes the logarithmic behavior of the deflection angle in the strong-field regime. Astrophysical implication of the obtained outcomes are discussed.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.17284",
  "author_total": 5,
  "authors": [
    {
      "name": "Kuantay Boshkayev"
    },
    {
      "name": "Ainur Urazalina"
    },
    {
      "name": "Aidana Kurmanbek"
    },
    {
      "name": "Manas Khassanov"
    },
    {
      "name": "Daniya Utepova"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cxmryateycxsh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.17284",
  "fulltext_url": null,
  "id": "cxmryateycxsh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.17284",
  "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",
      "3103|Astrophysical Phenomena and Observations"
    ]
  ],
  "openalex": "W7165035663",
  "pdf_url": "https://arxiv.org/pdf/2606.17284",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cxmryateycxsh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:22Z",
      "native_id": "2606.17284",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.17284"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Shadow, Emission, and Strong-Field Lensing of Dilatonic Black Holes",
  "title_text": "Shadow, Emission, and Strong-Field Lensing of Dilatonic Black Holes",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:44Z",
  "url": "https://research.draconitic.com/paper/cxmryateycxsh",
  "venue": "arXiv",
  "versions": []
}