Rocket observations of electron spectral and angular characteristics in an 'inverted V' event

Details Rocket observations of electron spectral and angular characteristics in an 'inverted V' event Rocket observations of electron spectral and angular characteristics in an 'inverted V' event

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976p%26ss...24..499l&link_type=abstract

Planetary and Space Science, vol. 24, May 1976, p. 499-514. Research sponsored by the Statens Naturvetenskapliga Forskningsrad

Computer Science

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5

Angular Distribution, Auroral Zones, Electron Flux Density, Electron Precipitation, Energy Spectra, Rocket Sounding, Anisotropy, Electron Energy, Particle Acceleration, Pitch (Inclination)

Scientific paper

Energy spectra and pitch-angle distributions of auroral electrons in the energy range from 2.5 to 11 keV observed during a rocket flight are presented. Strong rapidly fluctuating fluxes during the first part of the flight were succeeded by fluxes below or close to the level of detectability. Before the rocket passed through the northern precipitation boundary, two spectral events of 'inverted V' character occurred. Both events were associated with field-aligned pitch-angle distributions. While flux anisotropies which peaked near 0-deg were, in general, associated with the spectral peak energy, isotropy over the upper hemisphere was the dominant distribution for other energies. The observations made during these events provide strong support for the theory of a parallel potential drop close to the ionosphere as an important accelerating mechanism for auroral electrons in connection with 'inverted V' events.

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