Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19..837h&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 8, April 24, 1992, p. 837-840. Research supported by SERC and Royal
Astronomy and Astrophysics
Astronomy
13
Astronomical Models, Cometary Magnetospheres, Grigg-Skjellerup Comet, Plasma-Electromagnetic Interaction, Solar Wind, Bow Waves, Giacobini-Zinner Comet, Giotto Mission, Halley'S Comet, Shock Waves
Scientific paper
The planned encounter of the Giotto spacecraft with Comet Grigg-Skjellerup on 10th July 1992 is discussed. While there have been spacecraft missions to comets before now, this mission is exploratory in the sense that the target comet is much older and therefore it has a much lower gas production rate than Comets Halley (by a factor about 200) or Giacobini-Zinner (factor about 10). Theoretical predictions for the location of the bow shock and contact surface features are presented, and similar predictions are compared with the observed features at the previous encounters. The applicability of fluid-type theory which these models employ, in the case of strong and weak comets in the solar wind, is discussed.
Coates Andrew J.
Huddleston D. E.
Johnstone Alan D.
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