Giotto measurements of cometary and solar wind plasma at the Comet Halley bow shock

Details Giotto measurements of cometary and solar wind plasma at the Comet Halley bow shock Giotto measurements of cometary and solar wind plasma at the Comet Halley bow shock

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.327..489c&link_type=abstract

Nature (ISSN 0028-0836), vol. 327, June 11, 1987, p. 489-492. Research supported by the Swedish Board for Space Activities, CNES

Computer Science

24

Bow Waves, Ejecta, Giotto Mission, Halley'S Comet, Plasma Diagnostics, Solar Wind, Comet Nuclei, Electron Density Profiles, Shock Waves, Solar Electrons, Solar Magnetic Field, Comets, Giotto Mission, Plasma, Solar Wind, Halley, Bow Shock, Ions, Interaction, Neutral Particles, Comet Nuclei, Magnetic Fields, Shock, Structure, Electrons, Protons, Thermal Effects, Magnetic Effects, Pressure, Velocity, Comparisons, Jpa Instrument, Rpa Instrument, Diagrams, Density, Spacecraft Observations

Scientific paper

The authors present a comparative study of the solar wind electrons and protons and the cometary pick-up ions measured by Giotto at the inbound crossing of the bow shock at comet Halley. They find a highly structured shock transition starting with a cometary ion "foot" seen at a distance on the order of the cometary ion gyroradius upstream from a sharp decrease in the solar wind proton speed. The total solar wind thermal and magnetic pressure is dominated by the relatively small population of cometary ions throughout the shock region.

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