DIRECTIONAL ALIGNMENT AND NON-GAUSSIAN STATISTICS IN SOLAR WIND TURBULENCE
Journal Article
·
· Astrophysical Journal
- Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, DE 19716 (United States)
- U.S. Army Research Laboratory, Adelphi, MD (United States)
- Department of Mathematics, University of Waikato, Hamilton (New Zealand)
The magnetic and velocity field fluctuations in magnetohydrodynamic turbulence can be characterized by their directional alignment and induced electric field. These manifest as coherent spatial correlations which are measures of Alfvenicity and turbulence cascade strength, respectively. Solar wind observations and direct numerical simulations find that these distinctive correlations, caused by rapid relaxation processes that act to suppress nonlinearity, occur in localized spatial patches. This cellularization of magnetofluid turbulence is inconsistent with a superposition of Gaussian fields and could be related to spatial intermittency or other non-Gaussian statistics.
- OSTI ID:
- 21612712
- Journal Information:
- Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 741; ISSN ASJOAB; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Depression of Nonlinearity in Decaying Isotropic MHD Turbulence
ANISOTROPIC INTERMITTENCY OF MAGNETOHYDRODYNAMIC TURBULENCE
STATISTICS OF TURBULENT FIELD VARIATIONS, NON-GAUSSIANITY AND INTERMITTENCY
Journal Article
·
Thu Mar 06 23:00:00 EST 2008
· Physical Review Letters
·
OSTI ID:21123653
ANISOTROPIC INTERMITTENCY OF MAGNETOHYDRODYNAMIC TURBULENCE
Journal Article
·
Mon Mar 10 00:00:00 EDT 2014
· Astrophysical Journal Letters
·
OSTI ID:22365988
STATISTICS OF TURBULENT FIELD VARIATIONS, NON-GAUSSIANITY AND INTERMITTENCY
Journal Article
·
Sun May 10 00:00:00 EDT 2009
· Astrophysical Journal
·
OSTI ID:21300640