Other
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.6810h&link_type=abstract
American Astronomical Society, DPS meeting #41, #68.10
Other
Scientific paper
The ISSI comet Modeling Team is working to generate a versatile suite of comet environment models for both weak and active comets. One of the primary goals of the team is to generate a set of comprehensive models of the cometary coma ranging from the surface out to the interaction with the solar wind and covering dust, gas and plasma phases. We have linked together a series of 3D models for the nucleus, neutral gas, plasma, and dust. Information from each model is propagated into the others providing a full description of the environment from the surface out to millions of km. Our initial target comet is 67P/Churyumov-Gerasimenko, the target of the Rosetta mission.
The coupled models have been run for four initial cases that are representative of 67P/CG along its trajectory from the time of Rosetta's rendezvous with the comet to perihelion. After our first set of runs, feedback from the community had lead us to expand our set of cases based on different estimates of production rates and to include cases with jets.
The fully 3D coupled model suite has revealed a number of new insights into the cometary environment. For example, the non-spherical nature of dust and gas flow from the nucleus produces a decidedly non-radial flow in the very inner coma. Other sample results from the model suite will be shown. To access the results of our simulations we are creating a tool that will provide the community with easy access to simulation results. The Inner Coma Environment Simulation tool (ICES) has been developed as part of the efforts of our ISSI comet modeling team.
We will present results from each of the physical models that are currently being developed and will also demonstrate the ICES tool.
Gombosi Tamas I.
Hansen Kenneth Calvin
ISSI Comet Modeling Team
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