Low-energy auroral particle observations

Details Low-energy auroral particle observations Low-energy auroral particle observations

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978esasp.135...63w&link_type=abstract

In ESA European Sounding Rocket, Balloon and Related Res., with Emphasis on Expt. at High Latitudes p 63-71 (SEE N79-31637 22-

Computer Science

Sound

Auroras, Electron Energy, Emission Spectra, Ionospheric Sounding, Alignment, Electric Fields, Electron Flux Density, Electron Precipitation, Particle Acceleration, Rocket Sounding

Scientific paper

Low-energy auroral electron observations were conducted on several recent sounding rocket flights during various substorm phases. During undisturbed portions of the flight time the electron flux below 500 eV was nearly isotropic and could be described by a power law spectrum. At high energies the spectra were steeper and exhibited a loss cone signature. In disturbed periods nearly mono-energetic electron fluxes in the keV range were often superimposed on these distributions. In addition, strongly field-aligned electrons were frequently observed at low energies. A mechanism for field-aligned electric field acceleration is suggested.

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