Physics
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250a..25j&link_type=abstract
In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas p 25-27 (SEE N87-2
Physics
2
Halley'S Comet, Ion Distribution, Magnetohydrodynamic Flow, Plasma-Particle Interactions, Solar Wind, Cometary Atmospheres, Flow Velocity, Giotto Mission, Plasma Diagnostics, Plasma Temperature, Plasma Waves, Shock Waves
Scientific paper
The Giotto spacecraft was operated almost continuously at a high telemetry rate for more than 40 hours before the encounter. This enabled the Johnstone Plasma Analyser to make continuous detailed observations of the solar wind ion distribution (both protons and alpha particles) with a time resolution of 8 seconds from a distance of more than 107km. Many fluctuations occur in the density, velocity and temperature of the flow over a wide frequency range. The authors present a preliminary survey of the data from a distance of 5×106km to the cometary foreshock in order to distinguish the contribution produced by the interaction between implanted cometary ions and the solar wind and to obtain the characteristics of those waves.
Amata Ermanno
Borg H.
Coates Andrew J.
David Winningham J.
Formisano Vittorio
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