A new algorithm for modelling photoionising radiation in smoothed particle hydrodynamics

James Dale; Barbara Ercolano; Cathie Clarke

doi:10.1111/j.1365-2966.2007.12486.x

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arXiv · 0705.3396

A new algorithm for modelling photoionising radiation in smoothed particle hydrodynamics

James Dale·Barbara Ercolano·Cathie Clarke

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Abstract

We present a new fast algorithm which allows the simulation of ionising radiation emitted from point sources to be included in high-resolution three-dimensional smoothed particle hydrodynamics simulations of star cluster formation. We employ a Strömgren volume technique in which we use the densities of particles near the line-of-sight between the source and a given target particle to locate the ionisation front in the direction of the target. Along with one--dimensional tests, we present fully three--dimensional comparisons of our code with the three--dimensional Monte-Carlo radiative transfer code, MOCASSIN, and show that we achieve good agreement, even in the case of highly complex density fields.

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James Dale, Barbara Ercolano, Cathie Clarke. 2007-05-23. A new algorithm for modelling photoionising radiation in smoothed particle hydrodynamics. https://doi.org/10.1111/j.1365-2966.2007.12486.x

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