{
  "abstract": "We present a galaxy-scale black hole (BH) accretion and feedback model incorporating results from multi-zone general relativistic magnetohydrodynamic (GRMHD) simulations spanning the event horizon to the Bondi radius. The model replaces a fixed suppression of the Bondi rate with a nuclear-environment-dependent factor, $κ^{\\rm hot}_{\\rm cho}$, set by the local ratio of Bondi to gravitational radius, and distributes outflow mass, kinetic energy, and thermal energy according to the angular structure measured in the large-dynamic-range GRMHD calculations. We apply it to idealized isolated simulations of an M87*-like massive elliptical and a Milky Way/Sgr A*-like galaxy, spanning over three orders of magnitude in BH mass without tuning accretion or feedback efficiencies to match observables. In the M87*-like system, the GRMHD-informed angle-dependent feedback model suppresses late-time stellar mass growth more effectively than the isotropic reference model, despite similar long-term BH accretion rates. Varying the uncertain mass loading of the collimated polar component has a modest impact on BH growth and star formation, indicating that feedback anisotropy matters more than its detailed mass loading. We find that $κ^{\\rm hot}_{\\rm cho}$ varies with nuclear environment and time, yielding BH growth histories markedly different from fixed-suppression models. For Sgr A*, this variable factor yields an accretion rate more consistent with Event Horizon Telescope (EHT) constraints than a fixed, suppressed Bondi model. These results show that nuclear-environment-dependent accretion and feedback angular structure affect BH-galaxy evolution, requiring subgrid models to include more than a universal Bondi suppression factor and a scalar feedback efficiency.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.40784",
  "author_total": 9,
  "authors": [
    {
      "name": "Kung-Yi Su"
    },
    {
      "name": "Hyerin Cho"
    },
    {
      "name": "Priyamvada Natarajan"
    },
    {
      "name": "Claude-André Faucher-Giguère"
    },
    {
      "name": "Ramesh Narayan"
    },
    {
      "name": "Angelo Ricarte"
    },
    {
      "name": "Antonio J. Porras-Valverde"
    },
    {
      "name": "Cora Prather"
    },
    {
      "name": "Philip F. Hopkins"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f3p5bj1kwd5e4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.40784",
  "fulltext_url": null,
  "id": "f3p5bj1kwd5e4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.40784",
  "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.GA"
    ],
    [
      "arxiv",
      "astro-ph.HE"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.40784",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f3p5bj1kwd5e4.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:21:15Z",
      "native_id": "2610.40784",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.40784"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "Bridging Scales: Multi-Zone GRMHD-Informed Anisotropic AGN Feedback in Galaxies",
  "title_text": "Bridging Scales: Multi-Zone GRMHD-Informed Anisotropic AGN Feedback in Galaxies",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:51Z",
  "url": "https://research.draconitic.com/paper/f3p5bj1kwd5e4",
  "venue": "arXiv",
  "versions": []
}