Overview

The Cosmic Lyman-alpha Transfer (COLT) code is a Monte Carlo radiative transfer (MCRT) solver for post-processing hydrodynamical simulations on arbitrary grids. Supported geometries include plane-parallel slabs, spherical shells, 3D Cartesian grids, adaptive-resolution octrees, and unstructured Voronoi tessellations. COLT also provides visualization and analysis tools built on its ray-tracing algorithms and hybrid MPI + OpenMP C++ framework.

Support

If you have trouble obtaining, compiling, or running COLT, consult the documentation below or contact Aaron Smith at asmith@utdallas.edu. Collaboration is welcome, particularly when applying or extending newer features.

General Usage

• Getting Started
  • Compilation
  • Dependencies
  • Instructions for MacOS
  • Instructions for Linux Clusters
  • Makefile
  • Running a Simulation
• Simulation Parameters
  • Configuration Files
  • General Parameters
  • Cosmological Parameters
  • Gas Parameters
  • Camera Parameters
  • Escape Parameters
  • Additional File Parameters
  • Advanced Parameters
• Input and Output Files
  • Supported Geometries
  • Initial Conditions Files
  • Example Configuration File
  • Output Files
• Field Names and Descriptions
  • Gas Fields
  • Star Fields

Modules

• Projections and Visualization
  • General Parameters
  • Quickstart Example
• Monte Carlo Radiative Transfer
  • General MCRT Parameters
  • Line Parameters
  • Dust Parameters
  • Radiation Source Parameters
  • Observed Output Parameters
  • Radial Flow Parameters
  • Advanced Parameters
  • Quickstart Example
• MCRT Ionization Equilibrium
  • General Parameters
  • Saved Temperatures and Thermal Options
  • Ionization Parameters
  • Dust Parameters
  • Radiation Source Parameters
  • Probe Output Parameters
  • Observed Output Parameters
  • Advanced Parameters
  • Quickstart Example
• Ray-Tracing Radiative Transfer
  • Configuring an Escape Run
• Ray Data Extractions
  • General Ray Parameters
• Reionization Box Analysis
  • Configuring a Reionization Run

Resources

• Publications
  • Original Methods Paper:
  • Science Papers:
• Gallery
• Examples
  • Quickstart Example Tests
  • Tests

API

• pycolt
  • km
  • Escape