A 3D Monte Carlo Photoionization Code for Modeling Diffuse Ionized Gas

Abstract

We have developed a three dimensional Monte Carlo photoionization code tailored for the study of Galactic H II regions and the percolation of ionizing photons in diffuse ionized gas. We describe the code, our calculation of photoionization, heating & cooling, and the approximations we have employed for the low density H II regions we wish to study. Our code gives results in agreement with the Lexington H II region benchmarks. We show an example of a 2D shadowed region and point out the very significant effect that diffuse radiation produced by recombinations of helium has on the temperature within the shadow.

MNRAS accepted

References in corpus (15)

• Atomic Data for Astrophysics. II. New Analytic Fits for Photoionization Cross Sections of Atoms and Ions
• Cosmological Simulations with TreeSPH
• Radiative Equilibrium and Temperature Correction in Monte Carlo Radiation Transfer
• Atomic data for astrophysics. I. Radiative recombination rates for H-like, He-like, Li-like and Na-like ions over a broad range of temperature
• Improving Predictions for Helium Emission Lines
• Mocassin: A fully three-dimensional Monte Carlo photoionization code
• The Escape of Ionizing Photons from OB Associations in Disk Galaxies: Radiation Transfer Through Superbubbles
• Cosmological Reionization Around the First Stars: Monte Carlo Radiative Transfer
• Velocity and density spectra of the Small Magellanic Cloud
• Evidence for an Additional Heat Source in the Warm Ionized Medium of Galaxies
• Escape of Ionizing Radiation from High-Redshift Galaxies
• Monte Carlo transition probabilities. II
• Lyman Continuum Escape from Inhomogeneous ISM
• The Warm Ionized Medium in the Milky Way and Other Galaxies
• Can Reflection from Grains Diagnose the Albedo?

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