Physics
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.321..299m&link_type=abstract
Nature (ISSN 0028-0836), vol. 321, May 15, 1986, p. 299-303.
Physics
80
Comet Nuclei, Halley'S Comet, Ion Motion, Magnetohydrodynamic Flow, Plasma Dynamics, Solar Wind, Bow Waves, Energetic Particles, Energy Spectra, Japanese Spacecraft, Shock Waves, Comets, Halley, Spacecraft Observations, Mission Description, Experiments, Suisei, Plasma, Solar Wind, Interaction, Flow, Ions, Turbulence, Esp, Energy Spectrum Of Particles, Structure, Spectra, Bow Wave, Mass Loading, Equipment, Procedure, Velocity, Distribution, Diagrams, Energy
Scientific paper
The Japanese spacecraft Suisei encountered comet Halley on March 6, 1986, passing through a strong interaction region where the solar wind flow was severely perturbed by pickup ions of cometary origin. Plasma observations point to the existence of a cometary ion assimilation process in the solar wind flow. Some 230,000 km from the cometary nucleus, shell structures in the velocity space of cometary protons and water-group ions were clearly observable. The abrupt change of the plasma parameter observed at 450,000 km from the nucleus is suggested to represent the bow wave crossing. Mass loading was observed at a distance of up to about 1 million km.
Hirao Kimihiko
Kitayama Masanobu
Miyake Wataru
Mukai Tadashi
Terasawa Toshio
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