Some speculations about the origin of the high speed HCN jets in Comet Kohoutek /1973f/

Details Some speculations about the origin of the high speed HCN jets in Comet Kohoutek /1973f/ Some speculations about the origin of the high speed HCN jets in Comet Kohoutek /1973f/

Jan 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..46..109i&link_type=abstract

Astrophysics and Space Science, vol. 46, Jan. 1977, p. 109-114.

Other

Gas Jets, Hydrocyanic Acid, Kohoutek Comet, Reaction Kinetics, Comet Nuclei, Doppler Effect, Exothermic Reactions, Free Radicals, Ionospheric Currents

Scientific paper

The origin of the high-speed HCN jets observed in Comet Kohoutek (1973f) is considered. It is argued that the occurrence of these jets with Doppler shifts corresponding to velocities of approximately 3-5 km/s with respect to the nucleus cannot be explained in terms of either explosive outbursts of trapped sub-surface volatiles, highly exothermic chemical reactions involving free radicals, or the outward expansion of the cometary atmosphere with additional heating. Instead, acceleration of the precursor ions of HCN by energetic electrons in the ionospheric current sheets or current arcs is suggested to play an important role.

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