Physics
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9819077w&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A11, p. 19,077-19,079
Physics
2
Bow Waves, Comets, Interplanetary Magnetic Fields, Mach Number, Magnetohydrodynamic Waves, Shock Waves, Solar Wind, Wave Propagation, Giotto Mission, Magnetohydrodynamic Turbulence, Momentum, Pressure, Solar Activity
Scientific paper
Bow shocks in the solar wind plasma ahead of planets have been found to be both ubiquitous and stable, even under large fluctuations in the solar wind. The shocks adjust in position in response to momentum flux and pressure changes, but do not break up into waves. This appears true even at Venus and Mars, where pickup of atmospheric ions produces highly suprathermal heavy components that can pass upstream and modify the shock structure (e.g., shock foot). Zhank et al. (1992) claim that cometary shocks are qualitatively different because of ion picked up within the shock. But could this effect be vital? The following describes ways the cometary bow shock differs.
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