Gas and plasma in the vicinity of Comet Halley

Details Gas and plasma in the vicinity of Comet Halley Gas and plasma in the vicinity of Comet Halley

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988s%26w....27...92j&link_type=abstract

Sterne und Weltraum (ISSN 0039-1263), vol. 27, Feb. 1988, p. 92-96. In German.

Computer Science

Cometary Atmospheres, Halley'S Comet, Isotopes, Perihelions, Plasma Composition, Solar Wind, Comet Nuclei, Ion Cyclotron Radiation, Ionopause

Scientific paper

Observational and in situ measurement data on the neutral and ionized gas sublimated by Comet Halley during its perihelion passage in 1986 are summarized. The chemical composition and isotope ratios in the gas are examined, with particular emphasis on the direct detection of H2O, the low abundance of methane, and the presence of molecular ions of mass up to 200 amu. An overview of the interaction between the comet and the solar wind is given, considering the outer interaction zone (out to about 8 million km from the nucleus), the bow shock, the cometopause (135,000 and 260,000 km from the nucleus on the inward and outward passages of the Giotto spacecraft, respectively), the ionopause (at 4470 and 4160 km), and tail separation. Diagrams, graphs, and sample images are provided.

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