A new algorithm for modelling photoionizing radiation in smoothed particle hydrodynamics
Abstract
We present a new fast algorithm which allows the simulation of ionizing radiation emitted from a point source 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 ionization 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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- December 2007
- DOI:
- 10.1111/j.1365-2966.2007.12486.x
- arXiv:
- arXiv:0705.3396
- Bibcode:
- 2007MNRAS.382.1759D
- Keywords:
-
- radiative transfer;
- methods: numerical;
- Astrophysics
- E-Print:
- 10 pages, 7 figures, submitted to MNRAS