Methods and Challenges of Including Dust Evolution in Magnetohydrodynamic Simulations

Dust plays many important roles in the interstellar medium, affecting the heating, cooling and chemistry in all the different phases of the medium. Up until recently though, if dust was included in simulations at all, it was typically assumed that it was tightly coupled to the gas. More recent work...

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Published inJournal of physics. Conference series Vol. 2742; no. 1; pp. 12028 - 12036
Main Author Slavin, Jonathan D.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2024
Subjects
Dust
Evolution
Interstellar chemistry
Interstellar matter
Magnetohydrodynamic simulation
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Summary:Dust plays many important roles in the interstellar medium, affecting the heating, cooling and chemistry in all the different phases of the medium. Up until recently though, if dust was included in simulations at all, it was typically assumed that it was tightly coupled to the gas. More recent work has allowed for the dust to decouple from the gas, though this brings with it challenges for including all the dust destruction processes, especially grain-grain collisions. We discuss the various methods of simulating dust evolution in the context of magneto-hydrodynamical simulations of the interstellar medium and their strengths and weaknesses. In particular we present a method for improving on the tight coupling approach that shows promise for simulating the evolution of small grains subject to shocks.
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ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2742/1/012028