Statistics – Computation
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.0509k&link_type=abstract
American Astronomical Society, DPS meeting #40, #5.09; Bulletin of the American Astronomical Society, Vol. 40, p.395
Statistics
Computation
Scientific paper
This work is intended to verify hypothesis, that comet 17P/Holmes can rapidly brighten due to non-uniform crystallization of amorphous water ice. The recently observed increase of magnitude of this comet was correlated with a large rejection of dust. The amount of emitted dust derived from the increase of brightness suggests complete rejection of the dust mantle. We simulated evolution of a model nucleus on the orbit of comet 17P/Holmes. The nucleus is composed of water ice and dust. Our model includes crystallization of amorphous ice in the nucleus and changes of the dust mantle thickness. Our computations indicate, that: (i) rejection of the dust cover triggers crystallization of ice independently on the material properties of the nucleus; (ii) the dust mantle can not reach thickness larger than tens of centimetres; (iii) when the rotation axis has fixed orientation in space the dust mantle can not be spontaneously rejected; (iv) change of the orientation of the nucleus can lead to changes of the nucleus structure, but not to explosion.
Kossacki Konrad
Szutowicz Slawomira
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