Physics
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987icar...72..555k&link_type=abstract
Icarus (ISSN 0019-1035), vol. 72, Dec. 1987, p. 555-567.
Physics
31
Gas Jets, Halley'S Comet, Hydrodynamic Equations, Interplanetary Dust, Coma, Polar Coordinates, Shock Wave Interaction, Water, Comets, Symmetry, Dust, Gases, Jets, Comae, Jetting, Ejecta, Surface, Comet Nuclei, Water, Time Dependency, Particles, Hydrodynamics, Density, Distance, Flow, Velocity, Shock, Temperature, Mantle, Calculations, Models, Numerical Methods, Maps
Scientific paper
A hydrodynamic investigation is conducted on the isolated pure and dusty gas jets ejected from an active spot on the sunlit surface of an H2O-dominated comet nucleus' surface, yielding steady-state solutions of the expanding jets. By contrast with the previous treatment of jets surrounded by ambient gas and dust ejected from a nonactive region by Kitamura (1986), the present jet features are clearly discernible even at large distances from the nucleus center. In the dusty case, gas temperature increases from 200 to about 275 K near the surface, due to strong heating by the fine dust particles.
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