Publikationsdatum:
2019-07-12
Beschreibung:
The relationship between compressible and incompressible MHD turbulence at low plasma-frame acoustic Mach numbers is investigated analytically, with a focus on the range of validity of the pseudosound model proposed by Lighthill (1952). The derivation and asymptotic analysis procedures are explained in detail, and consideration is given to the role of number-density fluctuations and Alfven waves in the nearly incompressible model at low Mach numbers. The results are shown to be consistent with the turbulent-density spectrum theory of Montgomery et al. (1987) and applicable to solar-wind Alfven-wave turbulence.
Schlagwort(e):
PLASMA PHYSICS
Materialart:
Physics of Fluids (ISSN 0031-9171); 31; 3634-364
Format:
text
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