Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.8411l&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #84.11; Bulletin of the American Astronomical Society, V
Astronomy and Astrophysics
Astronomy
Scientific paper
We have begun a project to study energy dissipation in driven and decaying supersonic compressible MHD turbulence and its implications for star formation by modeling the conditions in molecular clouds using three-dimensional magnetohydrodynamic simulations. We begin by reproducing the work of Stone, Ostriker, & Gammie (1998) with Athena, a new higher-order Godunov scheme for ideal MHD which exactly conserves energy, momementum, and magnetic flux. We study the convergence of the energy in fluctuations in saturated turbulence with numerical resolution, for various initial magnetic field strengths, and compare to previous results. We also describe our algorithms to treat non-ideal MHD effects with more realistic thermodynamics which we plan to use to model the heating by decaying turbulence in molecular clouds.
Lemaster Michelle Nicole
Stone James M.
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