Comet Giacobini-Zinner - Plasma description

Details Comet Giacobini-Zinner - Plasma description Comet Giacobini-Zinner - Plasma description

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sci...232..356b&link_type=abstract

Science (ISSN 0036-8075), vol. 232, April 18, 1986, p. 356-361.

Computer Science

110

Giacobini-Zinner Comet, Solar Wind, Space Plasmas, Comet Tails, Density Distribution, Electron Energy, Heat Flux, Plasma Sheaths, Comets, Giacobini-Zinner, Ice Mission, Mission Description, Comet Tails, Spacecraft Observations, Comae, Solar Wind, Interaction, Atmosphere, Plasma, Plasma Electron Experiment, Comet Nuclei, Electrons, Flux, Ions, Density, Heating, Bow Shock, Magnetosphere, Magnetic Fields, Shape, Ionosphere, Theoretical Studies, Comparisons, Equipment, Structure

Scientific paper

A strong interaction between the solar wind and comet Giacobini-Zinner was observed on September 11, 1985 by the International Cometary Explorer (ICE) spacecrft. Periods of enhanced electron heat flux from the comet as well as continuous electron density fluctuations were measured, these effects being respectively related to electron heating in the interaction region and cometary ion pickup by the solar wind. No evidence for a conventional bow shock was found when the spacecraft entered the regions of strongest wind-comet interaction. The outer extent of this strong interaction zone was a transition region in which the solar wind plasma was heated, compressed, and slowed. Inside the inner boundary of the transition region was a sheath that enclosed a cold intermediate coma. In the transition region and sheath, density increases were observed and, in the center of the cold intermediate coma, a narrow high-density core of plasma was found.

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