Radiation of Electrostatic Waves from Shear Alfven waves

Details Radiation of Electrostatic Waves from Shear Alfven waves Radiation of Electrostatic Waves from Shear Alfven waves

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm41b1721s&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM41B-1721

Physics

Plasma Physics

[2772] Magnetospheric Physics / Plasma Waves And Instabilities, [7839] Space Plasma Physics / Nonlinear Phenomena

Scientific paper

Using two-dimensional particle-in-cell simulations, we demonstrate that in the propagating head of a bipolar shear Alfven wave (SAW), where large transverse gradients occur in the magnetic field and a large parallel current exists, strong electrostatic waves are generated including electrostatic ion cyclotron (EIC) and the whistler waves in the frequency band fLH < f < fpe, where fLH and fpe are the lower hybrid and plasma frequencies, respectively. In our simulations fpe = fce/3, where fce is the electron cyclotron frequency. The whistler waves propagate ahead of the SAW in conical structures with cone angles determined by the group velocity cone angles of the electrostatic whistler waves.

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