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DeMajistre et al. 2005
DeMajistre, R., Brandt, P.C., Immel, T.J., Yee, J.-H., Dalgarno, A., Paxton, L.J. and Kharchenko, V. (2005). Storm-time enhancement of mid-latitude ultraviolet emissions due to energetic neutral atom precipitation. Geophysical Research Letters 32: doi: 10.1029/2005GL023059. issn: 0094-8276.

In this work we present a direct connection between Energetic Neutral Atom (ENA) precipitation and enhanced ultraviolet emissions from the mid-latitude thermosphere during times of geomagnetic disturbance. Data from the IMAGE/HENA instrument provides information about ENA emission from the ring current, the IMAGE/FUV instrument shows the temporal response of the ultraviolet airglow, and data from TIMED/GUVI is used to infer the vertical distribution of the airglow enhancement. We find that the airglow signature is well correlated with energetic atom precipitation. The ultraviolet emission has a maximum above 120 km tangent altitude and is dominated by OI 135.6 nm emission. The relative brightness of 135.6 nm emission and OI 130.4 nm radiance suggest a lack of an electron cascade.

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Abstract

Keywords
Atmospheric Composition and Structure, Thermosphere, composition and chemistry, Atmospheric Composition and Structure, Thermosphere, energy deposition, Ionosphere, Particle precipitation, Atmospheric Processes, Thermospheric dynamics, Space Plasma Physics, Neutral particles
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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