AAS 201st Meeting, January, 2003
Session 15. Black Holes Observed and Modeled
Poster, Monday, January 6, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[15.10] Numerical Simulations of Compressible MHD turbulence

J. Cho, A. Lazarian (Univ. of Wisconsin-Madison)

We present numerical results for compressible isothermal magnetohydrodynamic (MHD) turbulence. We consider both low- and high-beta cases. We separate MHD fluctuations into 3 distinct families - Alfven, slow, and fast modes. We find that, production of slow and fast modes by Alfvenic turbulence is suppressed. As a result, Alfven modes in compressible regime exhibit scalings and anisotropy similar to those in incompressible regime. Slow modes passively mimic Alfven modes. However, fast modes show isotropy and a scaling similar to acoustic turbulence.

The author(s) of this abstract have provided an email address for comments about the abstract: cho@astro.wisc.edu

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