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Title: bhlight: General Relativistic Radiation Magnetohydrodynamics with Monte Carlo Transport

We present bhlight, a numerical scheme for solving the equations of general relativistic radiation magnetohydrodynamics using a direct Monte Carlo solution of the frequency-dependent radiative transport equation. bhlight is designed to evolve black hole accretion flows at intermediate accretion rate, in the regime between the classical radiatively efficient disk and the radiatively inefficient accretion flow (RIAF), in which global radiative effects play a sub-dominant but non-negligible role in disk dynamics. We describe the governing equations, numerical method, idiosyncrasies of our implementation, and a suite of test and convergence results. We also describe example applications to radiative Bondi accretion and to a slowly accreting Kerr black hole in axisymmetry.
Authors:
 [1] ;  [2] ;  [3]
  1. Univ. of Illinois, Urbana, IL (United States). Dept. of Astronomy
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of Illinois, Urbana, IL (United States). Dept. of Astronomy; Univ. of Illinois, Urbana, IL (United States). Dept. of Physics
Publication Date:
Report Number(s):
LA-UR-15-20947
Journal ID: ISSN 1538-4357
Grant/Contract Number:
AC52-06NA25396; AST 13-33612; NNX10AD03G; OCI-0725070; ACI-1238993
Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 807; Journal Issue: 1; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE; National Science Foundation (NSF); National Aeronautic and Space Administration (NASA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; black hole physics; methods numerical; relativistic processes
OSTI Identifier:
1329564