Nonlinear two-stream instabilities as an explanation for auroral bipolar wave structures

Details Nonlinear two-stream instabilities as an explanation for auroral bipolar wave structures Nonlinear two-stream instabilities as an explanation for auroral bipolar wave structures

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.1821g&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 13, p. 1821-1824

Physics

Plasma Physics

93

Magnetospheric Physics: Auroral Phenomena, Space Plasma Physics: Electrostatic Structures, Space Plasma Physics: Numerical Simulation Studies, Space Plasma Physics: Waves And Instabilities

Scientific paper

The evolution of two counter-streaming electron beams is shown by means of 2-D kinetic simulations to lead to electron distributions and coherent localized bipolar plasma wave structures with features similar to those measured by the FAST satellite in the auroral ionosphere. Electrostatic whistler waves are generated at later times when the bipolar structures begin to lose coherence and break up in the dimension transverse to the geomagnetic field.

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