Galtier, S. and Nazarenko, Sergey (2008) Large-scale magnetic field sustainment by forced MHD wave turbulence. Journal of Turbulence, Volume 9 (Number 40). pp. 1-10. doi:10.1080/14685240802512223 ISSN 1468-5248.

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Abstract

We investigate numerically the long-time behavior of balanced Alfven wave turbulence forced at intermediate scales. Whereas the usual constant flux solution is found at the smallest scales, two new scalings are obtained at the forcing scales and at the largest scales of the system. In the latter case we show, in particular, that the spectrum evolves first to a state determined by Loitsiansky invariant and later a state close to the thermodynamic equipartition solution predicted by wave turbulence. The astrophysical implications for galactic magnetic field regeneration are discussed.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science, Engineering and Medicine > Science > Mathematics
Library of Congress Subject Headings (LCSH):	Magnetohydrodynamics, Plasma turbulence, Magnetic fields, Turbulence, Waves
Journal or Publication Title:	Journal of Turbulence
Publisher:	Taylor & Francis Ltd.
ISSN:	1468-5248
Official Date:	2008
Dates:	Date Event 2008 UNSPECIFIED
Volume:	Volume 9
Number:	Number 40
Number of Pages:	10
Page Range:	pp. 1-10
DOI:	10.1080/14685240802512223
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	France. Agence nationale de la recherche (ANR), Institut national des sciences de l'univers (France)
Grant number:	06-BLAN-0363-0 (ANR)

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