Ionosphere-magnetosphere energy interplay in the regions of diffuse aurora

Autor: Khazanov, G. V., Glocer, A., Sibeck, D. G., Tripathi, A. K., Detweiler, L. G., Avanov, L. A., Singhal, R. P.
Zdroj: Journal of Geophysical Research - Space Physics; July 2016, Vol. 121 Issue: 7 p6661-6673, 13p
Abstrakt: Both electron cyclotron harmonic (ECH) waves and whistler mode chorus waves resonate with electrons of the Earth's plasma sheet in the energy range from tens of eV to several keV and produce the electron diffuse aurora at ionospheric altitudes. Interaction of these superthermal electrons with the neutral atmosphere leads to the production of secondary electrons (E??600?eV) initial energies will travel back through the loss cone, become trapped in the magnetosphere, and redistribute the energy content of the magnetosphere-ionosphere system. Thus, scattering of the secondary electrons by ECH and whistler mode chorus waves leads to an increase of the fraction of superthermal electron energy deposited into the core magnetospheric plasma. Magnetosphere-ionosphere coupling is a key in forming the diffuse auroral electron distribution functionWe present the solution of the Boltzmann-Landau kinetic equationIt is important to consider the coupled ionosphere-magnetosphere system
Databáze: Supplemental Index