Computer Science – Sound
Scientific paper
Aug 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981cajph..59.1106m&link_type=abstract
Canadian Journal of Physics, vol. 59, Aug. 1981, p. 1106-1115. Natural Sciences and Engineering Research Council of Canada
Computer Science
Sound
31
Auroral Spectroscopy, Electron Energy, Electron Spectroscopy, Geomagnetic Pulsations, Maxwell-Boltzmann Density Function, Rocket Sounding, Adiabatic Conditions, Canada, Flux (Rate), Plasma Layers, Pulsed Radiation, Rocket-Borne Instruments
Scientific paper
Electron spectra obtained during two rocket flights in February 1980 into pulsating aurora from Southend, Saskatchewan are analyzed. The spectra show Maxwellian energy distributions with temperature increases during pulsations. The characteristic energies were found to increase from 1.5 keV at pulsation minima to 1.8 keV at pulsation maxima during the first flight and from 1.8 to 2.1 keV at pulsation maxima during the second flight. It is thought that these observed electron energies may be typical of those exciting most moderate, stable pulsating auroras in the morning sector. By all appearances, the source of the modulation in electron energy during pulsations is the equatorial plane of the plasma sheet. The observations of energy increase, which are found to be consistent with adiabatic heating of the source electrons, suggest that a single mechanism is operative.
McEwen Don J.
Whalen Brian A.
Yau Andrew W.
Yee Eugene
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