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  • ASTROPHYSICS  (1)
  • 1985-1989  (1)
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    The evolution of topography on a comet (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The evolution of cometary surface topography is presently modeled in terms of a focusing of thermal energy due to topographical concavity. The model encompasses incident sunlight, shadowing, molecular sublimation, and mutual radiative heating by the walls of a circle-segment cross section trench, which has a 'lensing' effect. After a large number of perihelion passages, the net effect of trench bottom sublimation losses will be the accentuation of topographical concavities. The comet surface sublimation, comet-splitting, and comet surface jet-formation consequences of this model are discussed.
    Keywords: ASTROPHYSICS
    Type: Icarus (ISSN 0019-1035); 72; 128-134
    Format: text
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