An Exact Integration Scheme for Radiative Cooling in Hydrodynamical Simulations

Abstract

A new scheme for incorporating radiative cooling in hydrodynamical codes is presented, centered around exact integration of the governing semi-discrete cooling equation. Using benchmark calculations based on the cooling downstream of a radiative shock, I demonstrate that the new scheme outperforms traditional explicit and implicit approaches in terms of accuracy, while remaining competitive in terms of execution speed.

7 pages, accepted by ApJS. Revision 2, with error in eqn. 13 fixed

References in corpus (8)

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• X-ray Spectroscopy of Cooling Clusters
• Time-Dependent Ionization in Radiatively Cooling Gas
• A Rigid-Field Hydrodynamics approach to modeling the magnetospheres of massive stars
• A 3D MHD model of astrophysical flows: algorithms, tests and parallelisation
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• The Dynamics of Radiative Shock Waves: Linear and Nonlinear Evolution
• Radiative instabilities in simulations of spherically symmetric supernova blast waves

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