Wavenumber-Frequency structure of 2D Kinetic Plasma Turbulence

Details Wavenumber-Frequency structure of 2D Kinetic Plasma Turbulence Wavenumber-Frequency structure of 2D Kinetic Plasma Turbulence

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh53a1295p&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SH53A-1295

Physics

Plasma Physics

[7509] Solar Physics, Astrophysics, And Astronomy / Corona, [7827] Space Plasma Physics / Kinetic And Mhd Theory, [7863] Space Plasma Physics / Turbulence, [7899] Space Plasma Physics / General Or Miscellaneous

Scientific paper

The question of dissipation in turbulent collisionless plasmas is of key importance in the context of solar corona, solar wind and other astrophysical systems. Strong wave particle interactions are usually invoked to describe dissipation of energy in such plasmas. We look at the structure of 2 dimensional driven turbulence, set up in a hybrid plasma code, in the wavenumber-frequency space. The energies, when plotted in k-ω space, do not show any significant wave modes present in the system. This suggests that strong wave particle resonances may not be necessary to dissipate energy in turbulent plasmas. System size dependence of the problem as well as some possible dissipation mechanisms will be discussed.

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