Dissipation in Compressible MHD Turbulence

Details Dissipation in Compressible MHD Turbulence Dissipation in Compressible MHD Turbulence

1998-09-28

arxiv.org/abs/astro-ph/9809357v1

Astrophys.J. 508 (1998) L99-L102

Astronomy and Astrophysics

Astrophysics

5 pages, 3 Postscript figures, LaTeX, accepted by Ap.J.Lett

Scientific paper

10.1086/311718

We report results of a three dimensional, high resolution (up to 512^3) numerical investigation of supersonic compressible magnetohydrodynamic turbulence. We consider both forced and decaying turbulence. The model parameters are appropriate to conditions found in Galactic molecular clouds. We find that the dissipation time of turbulence is of order the flow crossing time or smaller, even in the presence of strong magnetic fields. About half the dissipation occurs in shocks. Weak magnetic fields are amplified and tangled by the turbulence, while strong fields remain well ordered.

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