Other
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..104..226h&link_type=abstract
Icarus (ISSN 0019-1035), vol. 104, no. 2, p. 226-233.
Other
5
Comet Nuclei, Comet Tails, Gas Pressure, Interplanetary Gas, Outgassing, Regolith, Halley'S Comet, Mathematical Models, Schwassmann-Wachmann Comet, Tensile Strength
Scientific paper
Attention is given to an experimental investigation of the physical mechanism of comet outbursts which is consistent with the general picture of mantle presence on comets and clarifies the relation of mantles to eruptive activity. The experiment and closeup observation of Comet P/Halley suggest a result different from most mathematical models in that the release of gas pressure does not occur only from uniform gas flow out of the entire surface. In some active comets near perihelion within a few AU of the sun, gas production rates and disturbance of the surface may be so high that the outflow is nearly continuous, with the regolith being entirely stripped away, as in many of the models. The present model provides a cyclic eruption and recharge mechanism which is lacking in most other models.
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