---
res:
  bibo_abstract:
  - 'We study very-high rate spherically symmetric accretion flows onto a massive
    black hole (BH; 10^2 < M_BH < 10^6 Msun) embedded in a dense gas cloud with a
    low abundance of metals, performing one-dimensional hydrodynamical simulations
    which include multi-frequency radiation transfer and non-equilibrium primordial
    chemistry. We find that rapid gas supply from the Bondi radius at a hyper-Eddington
    rate can occur without being impeded by radiation feedback when (n/10^5 cm^-3)
    > (M_BH/10^4Msun)^{-1}(T/10^4 K)^{3/2}, where n and T are the density and temperature
    of ambient gas outside of the Bondi radius. The resulting accretion rate in this
    regime is steady, and larger than 3000 times the Eddington rate. At lower Bondi
    rates, the accretion is episodic due to radiative feedback and the average rate
    is limited below the Eddington rate. For the hyper-Eddington case, the steady
    solution consists of two parts: a radiation-dominated central core, where photon
    trapping due to electron scattering is important, and an accreting envelope which
    follows a Bondi profile with T~8000 K. When the emergent luminosity is limited
    below the Eddington luminosity because of photon trapping, radiation from the
    central region does not affect the gas dynamics at larger scales. We apply our
    result to the rapid formation of massive BHs in protogalaxies with a virial temperature
    of T_vir> 10^4 K. Once a seed BH forms at the center of the galaxy, it can grow
    up to a maximum ~10^5 (T_vir/10^4 K) Msun via gas accretion independent of the
    initial BH mass. Finally, we discuss possible observational signatures of rapidly
    accreting BHs with/without allowance for dust. We suggest that these systems could
    explain Lya emitters without X-rays and luminous infrared sources with hot dust
    emission, respectively.@eng'
  bibo_authorlist:
  - 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: Jeremiah P.
      foaf_name: Ostriker, Jeremiah P.
      foaf_surname: Ostriker
  bibo_doi: 10.1093/mnras/stw836
  bibo_issue: '4'
  bibo_volume: 459
  dct_date: 2016^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0035-8711
  - http://id.crossref.org/issn/1365-2966
  dct_language: eng
  dct_publisher: Oxford University Press@
  dct_title: Hyper-Eddington accretion flows on to massive black holes@
...