Dissipation in compressible magnetohydrodynamic turbulence

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Abstract

We report results of a three-dimensional, high resolution (up to 5123) 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 the order of the flow crossing time or smaller, even in the presence of strong magnetic fields. About half of the dissipation occurs in shocks. Weak magnetic fields are amplified and tangled by the turbulence, while strong fields remain well ordered.

Original languageEnglish (US)
Pages (from-to)L99-L102
JournalAstrophysical Journal
Volume508
Issue number1 PART II
DOIs
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • ISM: kinematics and dynamics
  • ISM: magnetic fields
  • MHD
  • Turbulence
  • Waves

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