Other
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986georl..13..397o&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 13, April 1986, p. 397-400. DOE-supported research.
Other
34
Comet Heads, Oxygen Ions, Plasma Interactions, Solar Wind, Electric Fields, Interplanetary Magnetic Fields, Positive Ions, Solar Wind Velocity, Space Environment Simulation, Comets, Solar Wind, Interaction, Simulations, Comae, Ions, Velocity, Magnetic Fields, Electromagneic Waves, Momentum, Time Scale, Shock, Electric Fields, Acceleration, Formation, Procedure
Scientific paper
Interaction of the solar wind with newly born cometary ions, O(+), is studied through hybrid simulations (particle ions, fluid electrons). The results show that depending on the orientation of the interplanetary magnetic field (IMF) with respect to the solar wind velocity, two kinds of interaction are possible. When IMF is exactly or nearly parallel to the solar wind velocity, momentum transfer between the protons and the O(+) ions takes place solely through the excitation of large amplitude electromagnetic waves. On the other hand, as IMF becomes more oblique to the solar wind velocity, momentum transfer occurs on a faster time scale through the motional electric field in the solar wind. This more rapid deceleration can lead to the formation of a shock.
Omidi Nojan
Winske Dan
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