Nonlinear model for electron phase-space holes in magnetized space plasmas

Details Nonlinear model for electron phase-space holes in magnetized space plasmas Nonlinear model for electron phase-space holes in magnetized space plasmas

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1110j&link_type=abstract

Journal of Geophysical Research (Space Physics), Volume 107, Issue A7, pp. SMP 15-1, CiteID 1110, DOI 10.1029/2001JA900180

Physics

2

Magnetospheric Physics: Magnetosphere Interactions With Satellites And Rings, Magnetospheric Physics: Plasma Waves And Instabilities, Electromagnetics: Plasmas, Magnetospheric Physics: Energetic Particles, Trapped, Magnetospheric Physics: Electric Fields (2411)

Scientific paper

We formulate a drift-kinetic theory of electron phase-space vortices in magnetized space plasmas. It provides the theoretical explanation for the spatial and temporal scales of the electrostatic bipolar structures that have been observed by the Geotail and FAST spacecrafts in Earth's magnetotail and in the auroral zone. Our new nonlinear model accounts for the effects of both the electron polarization and the anisotropic electron temperature. Several different types of quasi-three-dimensional electron holes are found in the form of either cylinders or ellipsoids. Although topologically different, they produce similar signals on the spacecraft under typical FAST and Geotail observational conditions and cannot be distinguished with the use of the existing scarce satellite observational data.

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