Thermal modelling of two KOSI comet nucleus simulation experiments

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Abstract

Temperatures recorded during two KOSI comet nucleus simulation experiments strongly suggest that heat transport by vapor flow into the interior of the samples is important. We propose a model of heat and mass transfer that is capable of explaining the measured thermal histories of the samples. It is suggested that similar heat transfer mechanisms operate in porous ice layers on cometary nuclei and on other bodies in the solar system.

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Cited by (11)

  • Thermal model of water and CO activity of Comet C/1995 O1 (Hale-Bopp)

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    Citation Excerpt :

    However, many unsolved questions like the existence of amorphous ice or the porosity and pore size distribution in cometary nuclei make it difficult to derive realistic values. Laboratory measurements (Spohn et al., 1989; Seiferlin, 1991; Grün et al., 1993; Stöffler et al., 1991) generally suffer from the widely unknown structure and composition of cometary matter and may not be representative. We, therefore, developed a model that tries to keep the number of free parameters as low as possible by incorporating what is currently known based on recent observations of and missions to comets (Jorda et al., 1997; Fernández, 2002; Lederer and Campins, 2002; Groussin et al., 2007; Bockelée-Morvan et al., 2009).

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