Echo 2 - Observations at Fort Churchill of a 4-keV peak in low-level electron precipitation

Details Echo 2 - Observations at Fort Churchill of a 4-keV peak in low-level electron precipitation Echo 2 - Observations at Fort Churchill of a 4-keV peak in low-level electron precipitation

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jgr....80.2316a&link_type=abstract

Journal of Geophysical Research, vol. 80, June 1, 1975, p. 2316-2318.

Computer Science

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Auroras, Electron Precipitation, Energy Spectra, Rocket Sounding, Echo 2 Satellite, Electron Energy, Geomagnetism, Magnetic Effects, Polar Regions

Scientific paper

The Echo 2 rocket flight launched from Fort Churchill, Manitoba, offered the opportunity to observe high-latitude low-level electron precipitation during quiet magnetic conditions. Although no visual aurora was evident at the time of the flight, an auroral spectrum sharply peaked at a few keV was observed to have intensities from 1 to 2 orders of magnitude lower than peaked spectra typically associated with bright auroral forms. There is a growing body of evidence that relates peaked electron spectra to discrete aurora. The Echo 2 observations show that whatever the mechanism for peaking the electron spectrum in and above discrete forms, it operates over a range of precipitation intensities covering nearly 3 orders of magnitude down to subvisual or near subvisual events.

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