{
  "abstract": "In a tidal disruption event (TDE), a black hole (BH) tears apart a star, whose bound debris returns over many orbits to form an accretion disk. We present a framework built on the GPU-accelerated finite-volume code \\texttt{AthenaK} that follows these stages in a single simulation with self-gravity throughout. We extend \\texttt{AthenaK} with a moving frame, restart remapping between domains, an adaptive-mesh multigrid Poisson solver, a tabulated hydrogen--helium equation of state including recombination, a dual-energy update for the cold supersonic debris stream, a moving BH potential with excision, and localized adaptive time stepping (LAT), which speeds up the production run more than threefold. Each component is validated separately and in combination: the gravity solver maintains an isolated Lane--Emden sphere to a density error of $2.0\\times10^{-3}$ over 16.3 dynamical times, and dual-energy recovery reduces the pressure error of a Mach $7.75\\times10^7$ entropy wave from 15.7 to $4.0\\times10^{-12}$. We demonstrate the framework with a Newtonian $β=1$ disruption of a $1\\,M_\\odot$, $1\\,R_\\odot$ star by a $10^3\\,M_\\odot$ BH. The debris has the expected energy spread, insensitive to the self-gravity update interval, splits evenly into bound and unbound material, and yields a fallback rate approaching $t^{-5/3}$ at late times. At the pericenter nozzle, the thermal energy gained in the high-resolution run matches the vertical kinetic energy lost to within 6\\%, whereas the fiducial run, with 4--8 times coarser cells, overheats the thinnest early stream through numerical dissipation. Their heating agrees to 10\\% once the returning stream thickens. Multifrequency LTE post-processing produces synthetic images and luminosities.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.37859",
  "author_total": 7,
  "authors": [
    {
      "name": "Hong-Xuan Jiang"
    },
    {
      "name": "Mengqi Yang"
    },
    {
      "name": "David A. Velasco-Romero"
    },
    {
      "name": "Fangyuan Yu"
    },
    {
      "name": "Jing-Ze Xia"
    },
    {
      "name": "Xinyu Li"
    },
    {
      "name": "Yosuke Mizuno"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7ss9e563rmmg4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.37859",
  "fulltext_url": null,
  "id": "7ss9e563rmmg4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.37859",
  "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",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "astro-ph.IM"
    ],
    [
      "openalex",
      "3103|Astrophysical Phenomena and Observations"
    ]
  ],
  "openalex": "W7214902176",
  "pdf_url": "https://arxiv.org/pdf/2609.37859",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7ss9e563rmmg4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2609.37859",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.37859"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.IM",
      "subfield": "instrumentation-methods"
    }
  ],
  "title": "An End-to-End Numerical Framework for Tidal Disruption Events with AthenaK",
  "title_text": "An End-to-End Numerical Framework for Tidal Disruption Events with AthenaK",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/7ss9e563rmmg4",
  "venue": "arXiv",
  "versions": []
}