Storm‐time enhancement of mid‐latitude ultraviolet emissions due to energetic neutral atom precipitation | Zendy

DeMajistre R. | Zendy; Brandt P. C. | Zendy; Immel T. J. | Zendy; Yee J.H. | Zendy; Dalgarno A. | Zendy; Paxton L. J. | Zendy; Kharchenko V. | Zendy

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Storm‐time enhancement of mid‐latitude ultraviolet emissions due to energetic neutral atom precipitation

Author(s) -

DeMajistre R.,

Brandt P. C.,

Immel T. J.,

Yee J.H.,

Dalgarno A.,

Paxton L. J.,

Kharchenko V.

Publication year - 2005

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/2005gl023059

Subject(s) - airglow , radiance , atmospheric sciences , electron precipitation , thermosphere , ultraviolet , brightness , latitude , physics , extreme ultraviolet , emission spectrum , geomagnetic storm , environmental science , altitude (triangle) , light emission , earth's magnetic field , ionosphere , magnetosphere , astronomy , spectral line , optics , plasma , laser , quantum mechanics , magnetic field , geometry , mathematics

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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