HR: 0800h
AN: SM51C-0380    [Abstracts]
TI: X-Ray Emission from the Terrestrial Magnetosheath
AU: * Robertson, I P
EM: robertin@ku.edu
AF: University of Kansas, Department of Physics & Astronomy, Malott Hall, 1251 Wescoe Hall Dr., Room 1082, Lawrence, KS 66045 United States
AU: Collier, M R
EM: michael.r.collier@nasa.gov
AF: NASA/Goddard Space Flight Center, Code 692 - Interplanetary Physics, Greenbelt, MD 20771 United States
AU: Cravens, T E
EM: cravens@ku.edu
AF: University of Kansas, Department of Physics & Astronomy, Malott Hall, 1251 Wescoe Hall Dr., Room 1082, Lawrence, KS 66045 United States
AU: Fok, M
EM: mei-ching.h.fok@nasa.gov
AF: NASA/Goddard Space Flight Center, Code 692 - Interplanetary Physics, Greenbelt, MD 20771 United States
AB: X-rays are generated throughout the terrestrial magnetosheath as a consequence of charge transfer collisions between heavy solar wind ions and geocoronal neutrals. The solar wind ions resulting from these collisions are left in highly excited states and emit extreme ultraviolet or soft X-ray photons. A model has been created to simulate this X-ray radiation. Previously simulated images were created as seen from an observation point outside the geocorona. The locations of the bow shock and magnetopause were evident in these images. The cusps, however, were not taken into account in the model. We have now used dynamic three-dimensional simulations of the solar wind, magnetosheath and magnetosphere that were performed by the CCMC at Goddard Space Flight Center for the March 31st , 2001 geomagnetic storm. We have generated a sky map of the expected X-Ray emissions as would have been seen by an observer at the IMAGE space craft location at that time. We have also generated images as seen from an observation point well outside the geocorona. In both cases the presence of the cusps can clearly be observed.
DE: 2724 Magnetopause, cusp, and boundary layers
DE: 2728 Magnetosheath
DE: 2753 Numerical modeling
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting