Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:astro-ph/0610759)
· References in the article
· Citations to the Article (40) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Multiscale Hall-Magnetohydrodynamic Turbulence in the Solar Wind
Authors:
Galtier, Sébastien; Buchlin, Eric
Affiliation:
AA(Institut d'Astrophysique Spatiale, CNRS and Université Paris-Sud, Orsay, France ), AB(Space and Atmospheric Physics Group, Blackett Laboratory, Imperial College, London, UK)
Publication:
The Astrophysical Journal, Volume 656, Issue 1, pp. 560-566. (ApJ Homepage)
Publication Date:
02/2007
Origin:
UCP
Astronomy Keywords:
Magnetohydrodynamics: MHD, Sun: Solar Wind, Turbulence
DOI:
10.1086/510423
Bibliographic Code:
2007ApJ...656..560G

Abstract

The spectra of solar wind magnetic fluctuations exhibit a significant power-law steepening at frequencies f>1 Hz. The origin of this multiple scaling is investigated through dispersive Hall magnetohydrodynamics. We perform three-dimensional numerical simulations in the framework of a highly turbulent shell model and show that the large-scale magnetic fluctuations are characterized by a k-5/3-type spectrum that steepens at scales smaller than the ion inertial length di, to k-7/3 if the magnetic energy overtakes the kinetic energy, or to k-11/3 in the opposite case. These results are in agreement both with a heuristic description à la Kolmogorov and with the range of power-law indices found in the solar wind.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints