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Paper: The Spectrum and Small-Scale Structures of Magnetohydrodynamic Turbulence
Volume: 365, SINS — Small Ionized and Neutral Structures in the Diffuse Interstellar Medium
Page: 315
Authors: Mason, J.; Boldyrev, S.; Cattaneo, F.
Abstract: A theory of incompressible MHD turbulence in the presence of a strong guiding magnetic field is described. Numerical results that show good agreement with the theory are also presented. The theory was developed in Boldyrev (2005, 2006) and predicts that in the plane perpendicular to the guiding field, the velocity and magnetic field fluctuations align within a scale dependent angle θλλ1/4. The phenomena is known as dynamic alignment and leads to the field-perpendicular energy spectrum E(k) ∝ k−3/2. The results are of interest in understanding turbulence in the interstellar medium and may provide a natural explanation for the recent observations of interstellar scintillations of PSR 0329+54 and PSR J0437-4715 (Shishov et al. 2003; Smirnova, Gwinn & Shishov 2006).
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