Physics
Scientific paper
Jun 1965
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1965jatp...27..751r&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 27, no. 6, pp. 751-759
Physics
3
Scientific paper
Simultaneous observations of auroral luminosity and bremsstrahlung X-rays from the same balloon payload are reported here. Comparison of the balloon measurements with riometer records has shown the same variety of associations that appear in other studies of auroral phenomena. Because the photometer and scintillation counter geometries are fixed relative to each other and view equivalent regions of the sky at the production layer, it has been possible to investigate behavioral differences in the low and high energy portions of the precipitated electron spectrum with more certainty than when comparing balloon and ground-based observations. Certain aspects of the present observations suggest that temporal variations in these two energy ranges are rather independent, on occasion. These observations support the suggestion that two mechanisms having characteristically different energy spectra control the acceleration and/or precipitation of energetic electrons. Correlations of auroral luminosity with X-rays then depend upon the degree of coupling between the mechanisms.
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