Journal article
Gyrokinetic Simulations of Solar Wind Turbulence from Ion to Electron Scales
Physical review letters, Vol.107(3), pp.035004-035004
04/05/2011
DOI: 10.1103/PhysRevLett.107.035004
PMID: 21838370
Abstract
The first three-dimensional, nonlinear gyrokinetic simulation of plasma
turbulence resolving scales from the ion to electron gyroradius with a
realistic mass ratio is presented, where all damping is provided by resolved
physical mechanisms. The resulting energy spectra are quantitatively consistent
with a magnetic power spectrum scaling of $k^{-2.8}$ as observed in \emph{in
situ} spacecraft measurements of the "dissipation range" of solar wind
turbulence. Despite the strongly nonlinear nature of the turbulence, the linear
kinetic \Alfven wave mode quantitatively describes the polarization of the
turbulent fluctuations. The collisional ion heating is measured at
sub-ion-Larmor radius scales, which provides the first evidence of the ion
entropy cascade in an electromagnetic turbulence simulation.
Details
- Title: Subtitle
- Gyrokinetic Simulations of Solar Wind Turbulence from Ion to Electron Scales
- Creators
- Gregory G Howes - University of IowaJason M TenBarge - University of IowaWilliam Dorland - University of Maryland, College ParkEliot Quataert - University of California, BerkeleyAlexander A Schekochihin - University of OxfordRyusuke Numata - University of Maryland, College ParkTomoya Tatsuno - University of Maryland, College Park
- Resource Type
- Journal article
- Publication Details
- Physical review letters, Vol.107(3), pp.035004-035004
- DOI
- 10.1103/PhysRevLett.107.035004
- PMID
- 21838370
- NLM abbreviation
- Phys Rev Lett
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Grant note
- DOI: 10.13039/100000015, name: U.S. Department of Energy; DOI: 10.13039/100000001, name: National Science Foundation
- Language
- English
- Date published
- 04/05/2011
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199752502771
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