Anisotropic turbulence of shear-Alfvén waves

S. Galtier, S. V. Nazarenko, Alan C Newell, A. Pouquet

Research output: Contribution to journalArticle

103 Citations (Scopus)

Abstract

Weak turbulence of shear-Alfvén waves is considered in the limit of strongly anisotropic pulsations that are elongated along the external magnetic field. The kinetic equation thus derived agrees with the Galtier et al. formulation of the full three-dimensional helical case when taking the proper limit, This new approach allows for significant simplification, and, as a result, the applicability conditions for the weak turbulence theory are now more transparent. It thus provides an attractive theoretical framework for describing anisotropic MHD turbulence in astrophysical contexts where a strong magnetic field is present and for which shear-Alfvén waves are important.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume564
Issue number1 II
DOIs
StatePublished - Jan 1 2002

Fingerprint

S waves
S-wave
turbulence
magnetic field
simplification
magnetic fields
kinetic equations
astrophysics
formulations
kinetics

Keywords

  • ISM: general
  • MHD
  • Turbulence
  • Waves

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Anisotropic turbulence of shear-Alfvén waves. / Galtier, S.; Nazarenko, S. V.; Newell, Alan C; Pouquet, A.

In: Astrophysical Journal, Vol. 564, No. 1 II, 01.01.2002.

Research output: Contribution to journalArticle

Galtier, S. ; Nazarenko, S. V. ; Newell, Alan C ; Pouquet, A. / Anisotropic turbulence of shear-Alfvén waves. In: Astrophysical Journal. 2002 ; Vol. 564, No. 1 II.
@article{b720561487de4dc8916cd46a985de4ec,
title = "Anisotropic turbulence of shear-Alfv{\'e}n waves",
abstract = "Weak turbulence of shear-Alfv{\'e}n waves is considered in the limit of strongly anisotropic pulsations that are elongated along the external magnetic field. The kinetic equation thus derived agrees with the Galtier et al. formulation of the full three-dimensional helical case when taking the proper limit, This new approach allows for significant simplification, and, as a result, the applicability conditions for the weak turbulence theory are now more transparent. It thus provides an attractive theoretical framework for describing anisotropic MHD turbulence in astrophysical contexts where a strong magnetic field is present and for which shear-Alfv{\'e}n waves are important.",
keywords = "ISM: general, MHD, Turbulence, Waves",
author = "S. Galtier and Nazarenko, {S. V.} and Newell, {Alan C} and A. Pouquet",
year = "2002",
month = "1",
day = "1",
doi = "10.1086/338791",
language = "English (US)",
volume = "564",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1 II",

}

TY - JOUR

T1 - Anisotropic turbulence of shear-Alfvén waves

AU - Galtier, S.

AU - Nazarenko, S. V.

AU - Newell, Alan C

AU - Pouquet, A.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - Weak turbulence of shear-Alfvén waves is considered in the limit of strongly anisotropic pulsations that are elongated along the external magnetic field. The kinetic equation thus derived agrees with the Galtier et al. formulation of the full three-dimensional helical case when taking the proper limit, This new approach allows for significant simplification, and, as a result, the applicability conditions for the weak turbulence theory are now more transparent. It thus provides an attractive theoretical framework for describing anisotropic MHD turbulence in astrophysical contexts where a strong magnetic field is present and for which shear-Alfvén waves are important.

AB - Weak turbulence of shear-Alfvén waves is considered in the limit of strongly anisotropic pulsations that are elongated along the external magnetic field. The kinetic equation thus derived agrees with the Galtier et al. formulation of the full three-dimensional helical case when taking the proper limit, This new approach allows for significant simplification, and, as a result, the applicability conditions for the weak turbulence theory are now more transparent. It thus provides an attractive theoretical framework for describing anisotropic MHD turbulence in astrophysical contexts where a strong magnetic field is present and for which shear-Alfvén waves are important.

KW - ISM: general

KW - MHD

KW - Turbulence

KW - Waves

UR - http://www.scopus.com/inward/record.url?scp=0002529248&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0002529248&partnerID=8YFLogxK

U2 - 10.1086/338791

DO - 10.1086/338791

M3 - Article

VL - 564

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1 II

ER -