9941(  1) - 04/04/03 10:29  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      9941
                                                       Version: 1
                                                       Check-in Date: 04-Apr-2003
                                                                      10:29:01

1.Proposal Title:
Using STIS Observations of Auroral Lyman Alpha Line Profiles to Map High-Altitude
Winds on Jupiter
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2. Proposal For  3. Cycle
AR               11
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4. Investigators
                                                                                     Contact?
    PI: Tariq Majeed                      University of Michigan
   CoI: Dr. G. Gladstone                  Southwest Research Institute                  N
   CoI: Dr. Stephen Bougher               University of Michigan                        N

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5. Abstract

We propose to analyze high-resolution long-slit echelle spectra of Jupiter's auroral
Lyman alpha emissions obtained by STIS during the Cassini flyby of 12/2000-1/2001.
We will use a newly-developed velocity shear resonance line radiative transfer code
to extract upper atmosphere wind velocities (using an asymmetry produced when the
emergent self-reversed line is scattered by fast-moving H atoms high above the
aurora). These velocities will then be used (along with other extracted quantities,
such as temperature and composition) to constrain a newly-developed Jupiter
Thermosphere General Circulation Model (JTGCM). The results will enhance our
understanding of how Jupiter's aurora manages to affect its upper atmospheric
dynamics on a global scale.
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                                                9941(  1) - 04/04/03 10:29  - [  2]

            Summary Form for Proposal  9941

  Item                         Used in this proposal
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  Proposal Category            AR
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