Physics
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16...25k&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 16, Jan. 1989, p. 25-28.
Physics
6
Giacobini-Zinner Comet, Molecular Ions, Particle Interactions, Wave Packets, Whistlers, Linear Polarization, Nonlinear Systems, Particle Trajectories, Space Environment Simulation, Water, Comets, Giacobini-Zinner, Particles, Simulations, Whistlers, Waves, Ions, Water, Models, Trapping, Energy, Magnetohydrodynamics, Ice Mission, Magnetometer Instrument, Diagrams
Scientific paper
Nonlinear interactions of water group ions with large-amplitude whistler wave packets detected at the leading edge of steepened magnetosonic waves observed near Comet Giacobini-Zinner (GZ) are studied using test particle simulations of water-ion interactions with a model wave based on GZ data. Some of the water ions are found to be decelerated in the steepened portion of the magnetosonic wave to the resonance velocity with the whistler wave packets. Through resonance and related nonlinear interaction with the large-amplitude whistler waves, the water ions become trapped by the packet. An energy balance calculation demonstrates that the trapped ions lose their kinetic energy during the trapped motion in the packet. Thus, the nonlinear trapping motion in the wave structure leads to effective energy transfer from the water group ions to the whistler wave packets in the leading edge of the steepened MHD waves.
Kaya Necati
Matsumoto Haru
Tsurutani Bruce T.
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