Magnetic structure of the low beta, quasi-perpendicular shock

Details Magnetic structure of the low beta, quasi-perpendicular shock Magnetic structure of the low beta, quasi-perpendicular shock

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9815285f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A9, p. 15,285-15,294.

Physics

38

Bow Waves, Shock Waves, Solar Terrestrial Interactions, Solar Wind, Wave Propagation, Ion Cyclotron Radiation, Mach Number, Magnetohydrodynamic Stability, Solar Magnetic Field, Whistlers

Scientific paper

The structure of the low-beta quasi-perpendicular shock is examined in view of ISEE 1 and 2 magnetic field measurements. An analysis of shock overshoots indicates that the strength of the overshoots of low-beta, quasi-perpendicular shocks increases as the ratio of the Mach number to the first critical Mach number increases. Wave analysis indicates that the power of the downstream waves also increases as a function of this ratio of criticality. The thickness of the shock is a factor of 1-2 times greater than a precursor wavelength, countering the conjecture that the shock is the last amplified cycle of the precursor wave.

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