HR: 08:50h
AN: P41A-02 INVITED     [Abstracts]
TI: Heliospheric and Geocoronal X-rays
AU: * Robertson, I P
EM: robertin@ku.edu
AF: University of Kansas, Department of Physics and Astronomy, Malott Hall, 1251 Wescoe Hall Dr., Room 1082, Lawrence, KS 66045-7582 United States
AU: Cravens, T E
EM: cravens@ku.edu
AF: University of Kansas, Department of Physics and Astronomy, Malott Hall, 1251 Wescoe Hall Dr., Room 1082, Lawrence, KS 66045-7582 United States
AB: X-rays are generated throughout the heliosphere and the terrestrial magnetosheath as a consequence of charge transfer collisions between neutrals and heavy solar wind ions. Near Earth the highest production rate of this type of radiation is in the magnetosheath and particularly in the cusp regions. Due to its variability this radiation could be observable from suitable platforms and would be a valuable tool for monitoring space weather at Earth. Charge exchange also takes places between heavy solar wind ions and interstellar neutrals. The time variable component of this mechanism explains the long term enhancement contributions to the soft X-ray background seen in the ROSAT all-sky survey. Both types of X-ray emissions will be discussed.
DE: 2724 Magnetopause, cusp, and boundary layers
DE: 2728 Magnetosheath
DE: 7549 Ultraviolet emissions
DE: 7554 X rays, gamma rays, and neutrinos
SC: Planetary Sciences [P]
MN: 2005 Joint Assembly