Physics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.2735g&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 93, April 1, 1988, p. 2735-2740. DOE-DNA-sponsored research.
Physics
27
Geomagnetism, Gyromagnetism, Shock Wave Interaction, Bow Waves, Electric Potential, International Sun Earth Explorers, Ion Motion, Simulation
Scientific paper
The expressions derived by Jones and Ellison (1987) (JE) for the spatial integral of the noncoplanar field component in a fast-mode collisionless shock and for the magnitudes of the magnetic-field rotation and potential drop difference are evaluated on the basis of ISEE 1 and 2 observations in the earth bow shock and numerical simulations using the hybrid code of Leroy et al. (1981 and 1982). The data and simulation results are presented graphically and shown to be consistent with the JE hypothesis, that the rotation and drop difference are due to unequal electron and ion masses. The rotations and potential drop differences predicted by the JE equations, however, are found to be accurate only for subcritical shocks at low Mach numbers; the underestimation of the values for hypercritical shocks is attributed to neglect of the ion current from reflected gyrating ions.
Gosling Jack T.
Thomsen Michelle F.
Winske Dan
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