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Quantifying the Exospheric Component of Soft X-ray EmissionHigh charge state heavy ions in the solar wind exchange charge with ambient neutral gas. This process creates a product ion in an excited state. During the radiative cascade process, EUV and X-ray photons are emitted with energies in the range of about 100 eV to 1 keV. Because the terrestrial exospheric density at the nominal magnetopause location is relatively high, approx. 10 cu cm, solar wind charge exchange, or SWCX, can be observed by Earth-orbiting soft X-ray instruments such as the ROSAT Position Sensitive Proportional Counters (PSPC). In this presentation, we will compare simulated and observed soft Xray emission during an event on August 18-19, 1991 and discuss the role of exospheric SWCX emission for this and other events.
Document ID
Document Type
Conference Paper
Kuntz, Kip
(Johns Hopkins Univ. Baltimore, MD, United States)
Collier, Michael R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Snowden, Steven L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Robertson, Ina
(Kansas Univ. Kansas City, KS, United States)
Hansen, Kenneth
(Michigan Univ. Ann Arbor, MI, United States)
Cravens, Thomas
(Kansas Univ. Kansas City, KS, United States)
Date Acquired
August 24, 2013
Publication Date
December 10, 2007
Subject Category
Solar Physics
Meeting Information
American Geophysical Union Fall Meeting(San Frnacisco)
Distribution Limits
No Preview Available