HR: 16:00h
AN: P44A-03    [Abstracts]
TI: Ion emission spectra in the Jovian X-ray Aurora
AU: * Kharchenko, V
EM: vkharchenko@cfa.harvard.edu
AF: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 United States
AU: Dalgarno, A
EM: adalgarno@cfa.harvard.edu
AF: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 United States
AU: Schultz, D R
EM: schultzd@ornl.gov
AF: Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831 United States
AU: Stancil, P C
EM: stancil@hal.physast.uga.edu
AF: University of Georgia, Dep. Physics and Astronomy, Athens, GA 30602 United States
AB: X-ray and EUV emission spectra of energetic sulfur and oxygen ions precipitating into the Jovian atmosphere are investigated. The charge distributions of O^q+ and S^q+ ions are computed for different initial energies of the solar wind and magnetospheric ions with updated cross sections for stripping, electron capture, and target ionization processes. Results of Monte Carlo simulations of the energy-charge relaxation of precipitating ions are compared with the equilibrium charge model. Spectra of emitted X-ray and EUV photons are obtained for the sulfur and oxygen ion fluxes with different initial energies, and photon yield functions are computed for the brightest spectral lines. Theoretical spectra are used to determine the initial energy distributions of precipitating ions from the X-ray spectra detected by the Chandra and XMM-Newton X-ray telescopes. Spectral contributions of the magnetospheric and solar wind ions are compared.
DE: 6220 Jupiter
SC: Planetary Sciences [P]
MN: 2005 Joint Assembly