Physics
Scientific paper
Jan 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007esasp.643...55s&link_type=abstract
Workshop on Dust in Planetary Systems (ESA SP-643). September 26-30 2005, Kauai, Hawaii. Editors: Krueger, H. and Graps, A., p.5
Physics
Scientific paper
The innermost cometary water atmosphere formed by sublimation under solar heating is simulated by Direct Simulation Monte Carlo (DSMC). The nucleus is modeled as a non-spherical rotational body. The corresponding surface boundary conditions for the sublimating gas are determined from a self-consistent thermophysical model of a cometary nucleus developed by the authors. Fields of macrocharacteristics both for gas and dust are calculated by parallel computer implementation of the kinetic model. We show that the innermost coma is sensitive to the nucleus shape as well as to the variations of local gas production rates. In general, spatial structures of the innermost coma are a result of interactions of gas flows sublimated from different surface regions.
Markelov G. N.
Skorov Yu. V.
Uwe Keller Horst
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