ICE observations of Comet Giacobini-Zinner

Details ICE observations of Comet Giacobini-Zinner ICE observations of Comet Giacobini-Zinner

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987rspta.323..405c&link_type=abstract

(Royal Society (London), Philosophical Transactions, Series A, vol. 323, no. 1572, 1987, p. 405-420) IN: Diffuse matter in the s

Astronomy and Astrophysics

Astronomy

2

Giacobini-Zinner Comet, International Sun Earth Explorer 3, Solar Planetary Interactions, Spaceborne Astronomy, Cometary Atmospheres, Electron Density (Concentration), Ion Density (Concentration), Magnetic Fields, Plasma Waves, Solar Wind, Comets, Giacobini-Zinner, Ice Mission, Spacecraft Observations, Comae, Atmosphere, Solar Wind, Plasma, Magnetohydrodynamics, Ionization, Mass Loading, Velocity, Interactions, Magnetic Fields, Magnetotail, Shock, Boundary Layers, Flow, Compression, Turbulence, Diagrams, Eq

Scientific paper

An overview is given of data collected by the International Cometary Explorer (ICE) spacecraft on its encounter (passing through the tail at 7800 km from the nucleus) with Comet Giacobini-Zinner on September 15, 1985. The trajectory of the ICE relative to the comet structures and the instrument package are described and consideration is given to thermal-plasma, magnetic-field, plasma-wave, and energetic-ion observations. A sharp boundary was crossed on both inbound and outbound parts of the trajectory, with a width (10,000 km) equal to the energetic-heavy-ion Larmor radius; this boundary is tentatively attributed to a weak shock in the subsolar mass-loaded region upstream from the comet. Unexpectedly high degrees of field and plasma turbulence and broadband wave activity were observed in the encounter.

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