Other
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250a.105s&link_type=abstract
In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas p 105-108 (SEE N87
Other
Halley'S Comet, Heavy Ions, Ion Distribution, Space Plasmas, Angular Distribution, Cometary Atmospheres, International Sun Earth Explorer 3, Ion Sources, Particle Telescopes, Solar Wind
Scientific paper
On March 25, 1986, when the ICE spacecraft came within 28 million km of the nucleus of comet Halley, and for several days around this time, bursts of heavy ions were observed by the ICE energetic ion experiment. The bursts were observed only during periods when the solar wind velocity was considerably higher than its nominal value. The characteristics of these ions, in particular their anisotropies, were examined. Using the well known formulae for transformation of distributions from the solar wind frame of reference to the spacecraft frame, the angular distributions expected from either protons, or heavy ions from the water group, were studied, showing that the measurements are consistent with heavy ions, and not with protons. Other sources of heavy ions are considered, and the most likely source of these ions is comet Halley.
Bame J. Jr. S.
Cowley Stan W. H.
Daly Patrick W.
Hynds R. J.
Richardson Ian G.
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