Arepo-MCRT: Monte Carlo Radiation Hydrodynamics on a Moving Mesh
arXiv:2008.01750 · doi:10.3847/1538-4357/abc47e
Abstract
We present Arepo-MCRT, a novel Monte Carlo radiative transfer (MCRT) radiation-hydrodynamics (RHD) solver for the unstructured moving-mesh code Arepo. Our method is designed for general multiple scattering problems in both optically thin and thick conditions. We incorporate numerous efficiency improvements and noise reduction schemes to help overcome efficiency barriers that typically inhibit convergence. These include continuous absorption and energy deposition, photon weighting and luminosity boosting, local packet merging and splitting, path-based statistical estimators, conservative (face-centered) momentum coupling, adaptive convergence between time steps, implicit Monte Carlo algorithms for thermal emission, and discrete-diffusion Monte Carlo techniques for unresolved scattering, including a novel advection scheme. We primarily focus on the unique aspects of our implementation and discussions of the advantages and drawbacks of our methods in various astrophysical contexts. Finally, we consider several test applications including the levitation of an optically thick layer of gas by trapped infrared radiation. We find that the initial acceleration phase and revitalized second wind are connected via self-regulation of the RHD coupling, such that the RHD method accuracy and simulation resolution each leave important imprints on the long-term behavior of the gas.
arXiv comment23 pages, 20 figures, ApJ, in press
References in corpus (59)
- E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
- Radiation Pressure Supported Starburst Disks and AGN Fueling
- Rosseland and Planck Mean Opacities for Protoplanetary Discs
- Self-Regulated Star Formation in Galaxies via Momentum Input from Massive Stars
- The Arepo public code release
- Improving the convergence properties of the moving-mesh code AREPO
- RAMSES-RT: Radiation hydrodynamics in the cosmological context
- SKIRT: an Advanced Dust Radiative Transfer Code with a User-Friendly Architecture
- Magnetohydrodynamics on an unstructured moving grid
- Multi--dimensional Cosmological Radiative Transfer with a Variable Eddington Tensor Formalism
- Radiative transfer in very optically thick circumstellar disks
- Radiative transfer simulations of cosmic reionization I: methodology and initial results
- A scheme for radiation pressure and photon diffusion with the M1 closure in RAMSES-RT
- Direct Numerical Simulation of Radiation Pressure-Driven Turbulence and Winds in Star Clusters and Galactic Disks
- The thermodynamics of collapsing molecular cloud cores using smoothed particle hydrodynamics with radiative transfer
- A Module for Radiation Hydrodynamic Calculations With ZEUS-2D Using Flux-Limited Diffusion
- Enzo+Moray: Radiation Hydrodynamics Adaptive Mesh Refinement Simulations with Adaptive Ray Tracing
- Photon Conserving Radiative Transfer around Point Sources in multi-dimensional Numerical Cosmology
- Equations and Algorithms for Mixed Frame Flux-Limited Diffusion Radiation Hydrodynamics
- Radiation hydrodynamics with Adaptive Mesh Refinement and application to prestellar core collapse. I Methods
- A Godunov Method for Multidimensional Radiation Magnetohydrodynamics based on a variable Eddington tensor
- A Radiation Transfer Solver for Athena using Short Characteristics
- AREPO-RT: Radiation hydrodynamics on a moving mesh
- TRAPHIC - Radiative Transfer for Smoothed Particle Hydrodynamics Simulations
- Beyond Flux-Limited Diffusion: Parallel Algorithms for Multidimensional Radiation Hydrodynamics
- The physics of Lyman-alpha escape from high-redshift galaxies
- A Two-moment Radiation Hydrodynamics Module in Athena Using a Time-explicit Godunov Method
- A New Monte Carlo Method for Time-Dependent Neutrino Radiation Transport
- An Algorithm for Radiation Magnetohydrodynamics Based on Solving the Time-dependent Transfer Equation
- Monte Carlo Radiative Transfer
- A Multistep Algorithm for the Radiation Hydrodynamical Transport of Cosmological Ionization Fronts and Ionized Flows
- Radiation Feedback in ULIRGS: Are Photons Movers and Shakers?
- Monte Carlo Radiation Hydrodynamics with Implicit Methods
- The Lyman-alpha signature of the first galaxies
- Radiation Transport for Explosive Outflows: A Multigroup Hybrid Monte Carlo Method
- RASCAS: RAdiation SCattering in Astrophysical Simulations
- Using 3D Voronoi grids in radiative transfer simulations
- Impact of Lyman alpha pressure on metal-poor dwarf galaxies
- Radiation Transport for Explosive Outflows: Opacity Regrouping
- Radiation-hydrodynamical simulations of massive star formation using Monte Carlo radiative transfer: I. Algorithms and numerical methods
- Lyman-alpha radiation hydrodynamics of galactic winds before cosmic reionization
- Radiation pressure driving of a dusty atmosphere
- Radiation-hydrodynamical simulations of massive star formation using Monte Carlo radiative transfer II. The formation of a 25 solar-mass star
- Numerical Problems in Coupling Photon Momentum (Radiation Pressure) to Gas
- Hybrid Adaptive Ray-Moment Method (HARM): A Highly Parallel Method for Radiation Hydrodynamics on Adaptive Grids
- The Failure of Monte Carlo Radiative Transfer at Medium to High Optical Depths
- Dynamic Monte Carlo radiation transfer in SPH. Radiation pressure force implementation
- On the Modified Random Walk for Monte-Carlo Radiation Transfer
- Accurately simulating anisotropic thermal conduction on a moving mesh
- Radiation pressure in super star cluster formation
- A novel approach for accurate radiative transfer in cosmological hydrodynamic simulations
- Radiative effects during the assembly of direct collapse black holes
- Self-consistent modelling of line-driven hot-star winds with Monte Carlo radiation hydrodynamics
- Monte Carlo radiation hydrodynamics: methods, tests and application to supernova Type Ia ejecta
- Discrete diffusion Lyman-alpha radiative transfer
- MOCMC: Method of Characteristics Moment Closure, a Numerical Method for Covariant Radiation Magnetohydrodynamics
- SPRAI: Coupling of radiative feedback and primordial chemistry in moving mesh hydrodynamics
- Observing gas and dust in simulations of star formation with Monte Carlo radiation transport on Voronoi meshes
- CMacIonize 2.0: a novel task-based approach to Monte Carlo radiation transfer
Cited by in corpus (15)
- Introducing the THESAN project: radiation-magnetohydrodynamic simulations of the epoch of reionization
- An Implicit Finite Volume Scheme to Solve the Time Dependent Radiation Transport Equation Based on Discrete Ordinates
- The physics of Lyman-alpha escape from disc-like galaxies
- RIGEL: Simulating dwarf galaxies at solar mass resolution with radiative transfer and feedback from individual massive stars
- VETTAM: A scheme for radiation hydrodynamics with adaptive mesh refinement using the variable Eddington tensor method
- Radiation transport methods in star formation simulations
- TODDLERS: A new UV-mm emission library for star-forming regions. 1. Integration with SKIRT and public release
- Smoothed Particle Radiation Hydrodynamics: Two-Moment method with Local Eddington Tensor Closure
- Simulating ionization feedback from young massive stars: impact of numerical resolution
- General Relativistic Implicit Monte Carlo Radiation-Hydrodynamics
- The Ultramarine Simulation: properties of dark matter haloes before redshift 5.5
- The Sweep Method for radiative Transfer in Arepo
- Multidimensional half-moment multigroup radiative transfer. Improving moment-based thermal models of circumstellar disks
- Tetrahedral grids in Monte Carlo radiative transfer
- Influence of turbulence on Lyman-alpha scattering