2010

Velocity Field of Compressible MHD Turbulence: Wavelet Decomposition and Mode Scalings

Kowal, Grzegorz, Lazarian, Alex

Understand

We study compressible MHD turbulence, which holds key to many astrophysical processes, including star formation and cosmic ray propagation.

To account for the variations of the magnetic field in the strongly turbulent fluid we use wavelet decomposition of the turbulent velocity field into Alfven, slow and fast modes, which presents an extension of the Cho & Lazarian (2003) decomposition approach based on Fourier transforms.
The wavelets allow to follow the variations of the local direction of magnetic field and therefore improve the quality of the decomposition compared to the Fourier transforms which are done in the mean field reference frame.
For each resulting component we calculate spectra and two-point statistics such as longitudinal and transverse structure functions, as well as, higher order intermittency statistics.

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Beresnyak, A. & Lazarian, A. 2010, in press, (arXiv:1002.2428)
Original
2010
Closest in time.
Burkhart, B., Stanimirović, S., Lazarian, A., & Kowal, G. 2010, ApJ, 708, 1204
2010
Closest in time.
Kritsuk, A. G., Ustyugov, S. D., Norman, M. L., & Padoan, P. 2009, 180, 1, 2020
2020
Closest in time.

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