Physics
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.321..347m&link_type=abstract
Nature (ISSN 0028-0836), vol. 321, May 15, 1986, p. 347-349. Research supported by the National Board of Science and Technology
Physics
56
Cometary Atmospheres, Energetic Particles, Giotto Mission, Halley'S Comet, Ions, Bow Waves, Giacobini-Zinner Comet, Hydroxyl Radicals, Magnetic Fields, Shock Waves, Solar Wind, Spacecraft Instruments, Comets, Halley, Spacecraft Observations, Mission Description, Experiments, Ions, Epa, Energetic Particle Analyser, Giotto, Charged Particles, Energy, Bow Shock, Acceleration, Solar Wind, Mass Loading, Flux, Equipment
Scientific paper
The energetic particle experiment, EPONA/EPA, carried aboard the Giotto spacecraft, recorded in situ measurements of energetic charged particles on the sunward side of comet Halley, from a trajectory very close to the nucleus (closest approach 600 km). Selected observations from the inbound and outbound passes are presented. Preliminary studies suggest the presence on the inbound pass of an ion 'pick-up' region (about six million km in extent) and a region inside the bow shock (less than one million km in extent) where possible signatures of mass loading were evident. Acceleration by the pick-up process in the solar wind is inadequate to explain the energies of the observed ions.
Kirsch E.
McKenna-Lawlor Susan
O'Sullivan Donal
Thompson Abigail
Wenzel Klaus-Peter
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