Title

Collisionless magnetohydrodynamic turbulence in two dimensions

Authors

Authors

B. K. Shivamoggi

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Ann. Phys.

Keywords

magnetohydrodynamics; turbulence; MAGNETIC-FIELD RECONNECTION; HIGH-TEMPERATURE PLASMAS; MHD TURBULENCE; INTERSTELLAR TURBULENCE; STATISTICAL PROPERTIES; SPATIAL INTERMITTENCY; ALFVENIC TURBULENCE; INSTABILITIES; DYNAMICS; AMPLIFICATION; Physics, Multidisciplinary

Abstract

In this paper we give a formulation of two-dimensional (2D) collisionless magnetohydrodynamic (MHD) turbulence that includes the effects of both electron inertia and electron pressure (or parallel electron compressibility) and is applicable to strongly magnetized collisionless plasmas. We place particular emphasis on the departures from the 2D classical MHD turbulence results produced by the collisionless MHD effects. We investigate the fractal/multi-fractal aspects of spatial intermittency. The fractal model for intermittent collisionless MHD turbulence appears to be able to describe the observed k(-1) spectrum in the solar wind. Multi-fractal scaling behaviors in the inertial range are first deduced, and are then extrapolated down to the dissipative microscales. We then consider a parabolic-profile model for the singularity spectrum f(alpha), as an explicit example of a multi-fractal scenario. These considerations provide considerable insights into the basic mechanisms underlying spatial intermittency in 2D fully developed collisionless MHD turbulence. (c) 2004 Elsevier Inc. All rights reserved.

Journal Title

Annals of Physics

Volume

317

Issue/Number

1

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

1

Last Page

23

WOS Identifier

WOS:000228408800001

ISSN

0003-4916

Share

COinS