Physics
Scientific paper
Oct 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jgr....9919289g&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 99, no. A10, p. 19,289-19,300
Physics
18
Amplitudes, Magnetic Fields, Magnetohydrodynamic Stability, Magnetohydrodynamic Waves, Nonlinearity, Plasma Turbulence, Polarization (Waves), Computerized Simulation, Power Spectra, Spectrum Analysis
Scientific paper
The nonlinear dynamics following saturation of the parametric instabilities of a monochromatic field-aligned large-amplitude circularly polarized Alfven wave is investigated via direct numerical simulation in the case of high plasma beta and no wave dispersion. The magnetohydrodynamic (MHD) code permits nonlinear couplings in the parallel direction to the ambient magnetic field and one perpendicular direction. Compressibility is included in the form of a polytropic equation of state. Turbulent cascades develop after saturation of two coupled oblique three-wave parametric instabilities; one of which is an oblique filamentationlike instability reported earlier. Remnants of the parametric processes, as well as of the original Alfven pump wave, persist during late nonlinear times. Nearly incompressible MHD features such as spectral anisotropies appear as well.
Ghosh Sabyasachi
Goldstein Michel L.
Viñas Adolfo F.
No associations
LandOfFree
Nonlinear evolution of a large-amplitude circularly polarized Alfven wave: High beta does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Nonlinear evolution of a large-amplitude circularly polarized Alfven wave: High beta, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear evolution of a large-amplitude circularly polarized Alfven wave: High beta will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1071821