Cover Page/Proposal Summary
ROSS-99 NRA 99-OSS-01
Date Due: 5/3/99
This proposal shall be used and disclosed for evaluation purposes only, and a copy of this Government notice shall be applied to any reproduction or abstract thereof. Any authorized restrictive notices that the submitter places on this proposal shall also be strictly complied with. Disclosure of this proposal for any reason outside the Government evaluation purposes shall be made only to the extent authorized by the Government. |
Proposal Type: New Proposal |
Proposal Category: Comets |
Major Equipment Proposal? No |
Do you intend to submit an Education/Public Outreach (E/PO) proposal? No |
Proposal Title: |
The Distribution of Gases in the Inner Comae of Comets |
Abbreviated Proposal Title: |
Gas Comae of Comets |
Principal Investigator: |
Dr. Michael R.
Combi Atmos., Oceanic, and Space Sciences Space Physics Res. Lab. University of Michigan 2445 Hayward Street Ann Arbor, MI 48109-2143 Phone: 734-764-7226 Fax: 734-647-3083 E-mail: mcombi@umich.edu |
Signature | Date |
_____________________________________ | ____________ |
Co-Investigators and Collaborators: | |||
Type | Name | Affiliation | |
Sci Collab | Dr. Uwe Fink | University of Arizona | uwefink@lpl.arizona.edu |
Sci Collab | Dr. Walter Harris | University of Wisconsin | wharris@sal.wisc.edu |
Sci Collab | Dr. Frank Scherb | University of Wisconsin | scherb@wisp..physics.edu |
Sci Collab | Dr. Fred Roesler | University of Wisconsin | roesler@wisp.physics.wisc.edu |
Sci Collab | Dr. Christopher Anderson | University of Wisconsin | anderson@astro.wisc.edu |
Sci Collab | Dr. Dominique Bockelee-Morvan | Observatoire de Meudon Paris | domi@mesioa.obspm.fr |
Sci Collab | Dr. Tamas Gombosi | University of Michigan | tamas@umich.edu |
Proposal Summary:
In order to understand the physical and chemical processes which produce the observed spatial morphology of the cometary coma, it is necessary to analyze observational data with physically meaningful models. With this in mind, the purpose of this project is to undertake a coupled and complementary program of theoretical modeling and observational data analysis regarding the spatial distributions and dynamics of neutral and ionized gases in the coma. The emphasis of theoretical modeling will be on the non-equilibrium dynamics of the inner coma from the fluid region through the transition from collisional fluid-flow to the free-flow region with specific emphasis on observable conditions in the coma. For observational data analysis we will use the various powerful modeling tools we have developed and have available, including hydrodynamics, MHD, Monte Carlo, Direct Simulation Monte Carlo and various hydbrid calculations. The analysis of observational data will involve new and fruitful ongoing collaborations with groundbased programs, as well as any data of opportunity which might become available.