HR: 13:40h
AN: P53B-01    [Abstracts]
TI: Saturn's UV Aurora Imaged with HST during the Cassini Approach to Saturn
AU: * Clarke, J T
EM: jclarke@bu.edu
AF: Center for Space Physics Boston University, 725 Commonwealth Ave, Boston, MA 02215 United States
AU: Gerard, J
EM: JC.Gerard@ulg.ac.be
AF: University of Liege, Allee du 6 Aout Sart Tilman, Liege, B4000 Belgium
AU: Grodent, D
EM: D.Grodent@ulg.ac.be
AF: University of Liege, Allee du 6 Aout Sart Tilman, Liege, B4000 Belgium
AU: Wannawichian, S
EM: suwichaw@bu.edu
AF: Center for Space Physics Boston University, 725 Commonwealth Ave, Boston, MA 02215 United States
AU: Gustin, J
EM: J.Gustin@ulg.ac.be
AF: University of Liege, Allee du 6 Aout Sart Tilman, Liege, B4000 Belgium
AU: Connerney, J
EM: jec@lepjec.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Code 695, Greenbelt, MD 20771 United States
AU: Crary, F
EM: fcrary@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78228 United States
AU: Dougherty, M
EM: m.dougherty@ic.ac.uk
AF: Imperial College, Blackett Lab., London, SW7 2AZ United Kingdom
AU: Kurth, W
EM: wsk@space.physics.uiowa.edu
AF: Univ. of Iowa, Dept. of Physics and Astronomy, Iowa City, IA 52242 United States
AU: Cowley, S W
EM: swhc1@ion.le.ac.uk
AF: Univ. of Leicester, Dept. of Physics and Astronomy, Leicester, LE1 7RH United Kingdom
AU: Bunce, E
EM: ejb10@ion.le.ac.uk
AF: Univ. of Leicester, Dept. of Physics and Astronomy, Leicester, LE1 7RH United Kingdom
AU: Hill, T
EM: hill@rice.edu
AF: Rice University, Dept. of Physics and Astronomy, Houston, TX 77005 United States
AU: Kim, J
EM: juwhan@hotmail.com
AF: Yonsei Univ., School of Civil and Environmental Engineering, Seoul, 120-749 Korea, Republic of
AB: A series of HST STIS UV images of Saturn's aurora were obtained on 13 days in Jan. 2004 as the Cassini spacecraft measured the approaching solar wind properties. Clear general correlations have been found between the auroral power and a) Saturn's kilometric radiation, and b) the solar wind dynamic pressure, but not with the direction of the interplanetary magnetic field. While these general correlations are now well established, a closer examination of the data raises many interesting questions. Saturn's auroral emissions exhibit both local time and co-rotational properties, the auroral oval does not appear centered on the magnetic and rotational pole, the auroral emissions exhibit large and unexpected motions in latitude with time and/or planetary rotation, and the auroral oval does not appear continuous, but broken with longitude. This talk will present a more detailed look at Saturn's aurora from the HST images, with a comparison of auroral emission properties to those at the Earth and Jupiter.
DE: 5719 Interactions with particles and fields
DE: 5734 Magnetic fields and magnetism
DE: 5757 Remote sensing
SC: Planetary Sciences [P]
MN: 2004 AGU Fall Meeting