Low and high frequency waves generated by gyrophase bunched ions at oblique shocks

Details Low and high frequency waves generated by gyrophase bunched ions at oblique shocks Low and high frequency waves generated by gyrophase bunched ions at oblique shocks

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20..783g&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 9, p. 783-786.

Physics

13

Ion Beams, Magnetohydrodynamic Waves, Oblique Shock Waves, Solar Terrestrial Interactions, Whistlers, Bunching, Computerized Simulation, Solar Magnetic Field, Trapping

Scientific paper

The interaction of the solar wind with gyrophase bunched ions reflected at an oblique shock is simulated using a ID hybrid code. These ions are unstable to low frequency hydromagnetic waves as well as whistler waves. At some point in the hydromagnetic wave growth ion trapping occurs which restricts the local distribution in gyrophase to a higher degree than the input distribution. Given the growth rate of the MHD waves, gyrophase mixing is ineffective in isotropizing the ions, except at the leading edge of the injected distribution.

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