Electron Magnetohydrodynamics Turbulence in Astrophysical Context

Details Electron Magnetohydrodynamics Turbulence in Astrophysical Context Electron Magnetohydrodynamics Turbulence in Astrophysical Context

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aps..dpp.gm108d&link_type=abstract

American Physical Society, 41st Annual Meeting of the Division of Plasma Physics, November 15-19, 1999 Seattle, WA, abstract #GM

Physics

Plasma Physics

Scientific paper

It has now been increasingly felt that certain solar and astrophysical phenomenon involve length and time scales where electron dynamics is of relevance. A few examples being the proposal of fast reconnection mechanisms to explain large energy release in solar flares; the possibility of turbulent cascade of power in the presence of strong magnetic field to whistler scales, resulting in the preferential heating of electrons in accreting discs, etc. To develop a better understanding of these phenomenon, numerical and analytical studies on Electron Magnetohydrodynamic turbulence will be presented. It will be shown that the turbulent spectrum gets adequately whisterlized resulting in a reduction of the effective turbulent diffusivity of the magnetic field. Whistlers are also found to be instrumental in anisotropization of the turbulent spectrum in the presence of external magnetic field.

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