Computer Science – Sound
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992angeo..10..157r&link_type=abstract
(Modelling, simulation and sounding of cometary nuclei; Proceedings of the International Workshop, Cagliari, Italy, May 28-30, 1
Computer Science
Sound
10
Astronomical Models, Comet Nuclei, Gas Flow, Space Missions, Outgassing, Parameterization, Porous Materials, Sublimation
Scientific paper
The study updates the current status of theoretical modeling pertaining to the evolutionary state of cometary nuclei, with particular attention given to models of porous nuclei with subsurface sublimation in order to evaluate the uncertainties of model calculations of the gas flux leaving the surface of the nucleus. The possibilities for using such model results in combination with observed gas production rates, nongravitational effects, and nuclei magnitudes in order to estimate basic physical parameters of the nuclei is discussed. The most critical problems are identified and specific recommendations for future work are given in order to better estimate the level of dust coverage, size, and density of periodic comet nuclei. A tentative criterion for picking fresh comets as space mission targets is formulated on the basis of nongravitational effects.
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