Quantifying the Exospheric Component of Soft X-ray Emission

Details Quantifying the Exospheric Component of Soft X-ray Emission Quantifying the Exospheric Component of Soft X-ray Emission

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh12a0852k&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH12A-0852

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2784 Solar Wind/Magnetosphere Interactions

Scientific paper

High 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, ~10 cm-3, 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 X-ray emission during an event on August 18-19, 1991 and discuss the role of exospheric SWCX emission for this and other events.

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