{
  "abstract": "Accretion disk surrounding around compact astrophysical objects serve as a powerful laboratories for testing gravitational theories in the strong-field regimes. In this work, we systematically investigated the structural, dynamical, and thermodynamic properties of the steady-state thin accretion disk within the framework of $f(R,T)$ gravity by adopting the linear functional form $f(R,T) = R + 2χT$ coupled with the pressure-free dust fluid matter Lagrangian ($\\mathcal{L}_m = -ρ$). We demonstrate that the modified field equations seamlessly reduce to standard General Relativity in the pure vacuum limit ($T_{μν} = 0$). Utilizing a perturbative approach for a small coupling parameter ($\\vert{}χ\\vert{} \\ll 1$), we derive the first-order corrections to the background Schwarzschild metric potentials, which subsequently govern the modified particle kinematics, the specific energy $E$, the specific angular momentum $L$, and the Keplerian angular velocity $Ω$. Our analysis reveals that the geometry-matter coupling parameter $χ$ significantly shifted towards the location of the Innermost Stable Circular Orbit ($r_{isco}$) and alters the radial energy dissipation rate $F(r)$ and the effective surface temperature profile $T(r)$ across the Shakura-Sunyaev thin disk. Furthermore, the resulting modifications in the Spectral Energy Distribution (SED) and overall radiative efficiency $η$ provide robust theoretical signature.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.30319",
  "author_total": 1,
  "authors": [
    {
      "name": "S. H. Shekh"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/202d9766e4rq6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.30319",
  "fulltext_url": null,
  "id": "202d9766e4rq6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.30319",
  "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"
    ],
    [
      "openalex",
      "3103|Astrophysical Phenomena and Observations"
    ]
  ],
  "openalex": "W7214617285",
  "pdf_url": "https://arxiv.org/pdf/2609.30319",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/202d9766e4rq6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:52Z",
      "native_id": "2609.30319",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.30319"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Thin Accretion Disk and Optical Signatures in f(R,T) Modified Gravity",
  "title_text": "Thin Accretion Disk and Optical Signatures in f(R,T) Modified Gravity",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:52Z",
  "url": "https://research.draconitic.com/paper/202d9766e4rq6",
  "venue": "arXiv",
  "versions": []
}