Other
Scientific paper
Feb 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jgr....80..502g&link_type=abstract
Journal of Geophysical Research, vol. 80, Feb. 1, 1975, p. 502-514.
Other
9
Bow Waves, Laminar Flow, Plasma Diagnostics, Satellite Observation, Shock Wave Propagation, Solar Wind, Ogo-5, Propagation Velocity, Resolution, Shock Wave Profiles, Whistlers
Scientific paper
It was found that low solar wind parameters M (less than or around 2.5) and beta (much less than 1) and high angles to the local shock normal, theta (greater than or around 65 deg), produced oblique laminar shock profiles as expected from theory, with marginal or vanishing upstream standing whistlers probably damped by acoustic or other plasma wave instabilities. The whistler mode appeared to dominate the electromagnetic spectrum. The laminar shock ramp thickness was several hundred kilometers and equal to (2-4)c/omega-pi. Composition of the shock as an accumulation of near-standing waves and an evidently reproducible varying flux pattern was discernible. Electron thermalization occurred early in, or just before, the magnetic ramp, while proton thermalization appeared to occur later in the ramp. Instantaneous shock velocities derived from the standing whistler wavelength were consistent with average velocities derived from the elapsed time estimates and were as high as 200 km/sec.
Formisano Vittorio
Greenstadt Eugene W.
Neugebauer Matthias
Russell Christopher T.
Scarf Frederick L.
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