Physics – Plasma Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh51d1712v&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SH51D-1712
Physics
Plasma Physics
[2149] Interplanetary Physics / Mhd Waves And Turbulence, [4490] Nonlinear Geophysics / Turbulence, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields, [7836] Space Plasma Physics / Mhd Waves And Instabilities
Scientific paper
We develop a nonlinear two-dimensional fluid model of whistler turbulence that includes effect of electron fluid density perturbations. The latter is coupled nonlinearly with wave magnetic field. This coupling leads essentially to finite compressibility effects in whistler turbulence model. We find from our simulations that despite strong compressibility effects, the density fluctuations follow the evolution of the wave magnetic field fluctuations. In a characteristic regime where large scale whistlers are predominant, the coupled density fluctuations are found to follow a Kolmogorov-like phenomenology in the inertial range turbulence. Consequently, the turbulent energy is dominated by the large scale (compared to electron inertial length) eddies and it follows a Kolmogorov-like spectrum, where k is a characteristic wavenumber.
Shaikh Dastgeer
Verma Mahendra K.
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