Coupled Ion Acceleration and Wave Excitation at Earth's Bow Shock

Details Coupled Ion Acceleration and Wave Excitation at Earth's Bow Shock Coupled Ion Acceleration and Wave Excitation at Earth's Bow Shock

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsh51b..01l&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SH51B-01

Other

2116 Energetic Particles, Planetary, 2154 Planetary Bow Shocks, 2728 Magnetosheath, 7851 Shock Waves

Scientific paper

A brief observational and theoretical history of coupled ion acceleration and wave excitation at Earth's bow shock is presented including the "reflected" (R), "intermediate" (I), and "diffuse" (D) ion populations, the ultra-low-frequency (ULF) waves upstream of Earth's bow shock, and the spatial structure of the wave and ion "foreshock". Emphasis is placed on the spatial transition of the bow shock from "quasi-perpendicular" to "quasi-parallel". In addition, the origin of the ions, the acceleration of electrons, the downstream "thermalization" of ions at weak quasi-perpendicular portions of the shock, and the foreshocks observed at other planets are reviewed. The current understanding of these phenomena is assessed. Finally, a few issues which remain unresolved or controversial since the era of the ISEE 1, 2, and 3 spacecraft are discussed including the origin of the exponential ion energy spectra, the ion "injection" mechanisms at the shock, and the relative contribution of magnetospheric ions to the diffuse ion population.

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