Magnetohydrodynamic turbulence: Generalized formulation and extension to compressible cases

    Authors

    B. K. Shivamoggi

    Comments

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    Abbreviated Journal Title

    Ann. Phys.

    Keywords

    turbulence theory; MAGNETIC-FIELD; HYDROMAGNETIC TURBULENCE; MOLECULAR CLOUDS; DISSIPATION; SPECTRUM; RANGE; LAWS; Physics, Multidisciplinary

    Abstract

    A general framework that incorporates the Iroshnikov-Kraichnan (IK) and Goldreich-Sridhar (GS) phenomenalogies of magnetohydrodynamic (MHD) turbulence is developed. This affords a clarification of the regimes of validity of the IK and GS models and hence help resolve some controversies on this aspect. This general formulation appears to have a certain robustness as revealed here by its form invariance with respect to inclusion of compressible effects. Generalizations of the IK and GS spectra to compressible MHD turbulence are given. These two branches are shown to merge with the MHD shockwave spectrum, as to be expected, in the infinite compressibility limit. (C) 2008 Elsevier Inc. All rights reserved.

    Journal Title

    Annals of Physics

    Volume

    323

    Issue/Number

    6

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    1295

    Last Page

    1303

    WOS Identifier

    WOS:000256634800001

    ISSN

    0003-4916

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