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The evolution of topography on a comet (1987)

Jakosky, Bruce M. ; Colwell, Joshua E.

In: Other Sources

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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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