---
res:
  bibo_abstract:
  - We study the long-term evolution of the global structure of axisymmetric accretion
    flows onto a black hole (BH) at rates substantially higher than the Eddington
    value (M˙Edd), performing two-dimensional hydrodynamical simulations with and
    without radiative diffusion. In the high-accretion optically-thick limit, where
    the radiation energy is efficiently trapped within the inflow, the accretion flow
    becomes adiabatic and comprises of turbulent gas in the equatorial region and
    strong bipolar outflows. As a result, the mass inflow rate decreases toward the
    center as M˙in∝rp with p∼0.5−0.7 and a small fraction of the inflowing gas feeds
    the nuclear BH. Thus, super-Eddington accretion is sustained only when a larger
    amount of gas is supplied from larger radii at >100−1000 M˙Edd. The global structure
    of the flow settles down to a quasi-steady state in millions of the orbital timescale
    at the BH event horizon, which is >10−100 times longer than that addressed in
    previous (magneto-)RHD simulation studies. Energy transport via radiative diffusion
    accelerates the outflow near the poles in the inner region but does not change
    the overall properties of the accretion flow compared to the cases without diffusion.
    Based on our simulation results, we provide a mechanical feedback model for super-Eddington
    accreting BHs. This can be applied as a sub-grid model in large-scale cosmological
    simulations that do not sufficiently resolve galactic nuclei, and to the formation
    of the heaviest gravitational-wave sources via accretion in dense environments.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Haojie
      foaf_name: Hu, Haojie
      foaf_surname: Hu
  - foaf_Person:
      foaf_givenName: Kohei
      foaf_name: Inayoshi, Kohei
      foaf_surname: Inayoshi
  - foaf_Person:
      foaf_givenName: Zoltán
      foaf_name: Haiman, Zoltán
      foaf_surname: Haiman
      foaf_workInfoHomepage: http://www.librecat.org/personId=7c006e8c-cc0d-11ee-8322-cb904ef76f36
  - foaf_Person:
      foaf_givenName: Eliot
      foaf_name: Quataert, Eliot
      foaf_surname: Quataert
  - foaf_Person:
      foaf_givenName: Rolf
      foaf_name: Kuiper, Rolf
      foaf_surname: Kuiper
  bibo_doi: 10.3847/1538-4357/ac75d8
  bibo_issue: '2'
  bibo_volume: 934
  dct_date: 2022^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0004-637X
  - http://id.crossref.org/issn/1538-4357
  dct_language: eng
  dct_publisher: American Astronomical Society@
  dct_title: 'Long-term evolution of supercritical black hole accretion with outflows:
    A subgrid feedback model for cosmological simulations@'
...