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Large-scale magnetic field sustainment by forced MHD wave turbulence
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Galtier, S. and Nazarenko, Sergey. (2008) Large-scale magnetic field sustainment by forced MHD wave turbulence. Journal of Turbulence, Vol.9 (No.40). pp. 1-10. ISSN 1468-5248
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Official URL: http://dx.doi.org/10.1080/14685240802512223
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: | T Technology > TJ Mechanical engineering and machinery Q Science > QC Physics |
| Divisions: | Faculty of Science > Mathematics |
| Journal or Publication Title: | Journal of Turbulence |
| Publisher: | Taylor & Francis Ltd. |
| ISSN: | 1468-5248 |
| Date: | 2008 |
| Volume: | Vol.9 |
| Number: | No.40 |
| Number of Pages: | 10 |
| Page Range: | pp. 1-10 |
| Identification Number: | 10.1080/14685240802512223 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | PNST ( Programme National Soleil-Terre), INSU (CNRS), ANR |
| Grant number: | 06-BLAN-0363-0 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/28904 |
Data sourced from Thomson Reuters' Web of Knowledge
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