Evidence for Velocity Dispersion in Auroral Electrons

@article{Bryant1967EvidenceFV,
  title={Evidence for Velocity Dispersion in Auroral Electrons},
  author={Donald A. Bryant and Henry L. Collin and G. M. Courtier and Alan D. Johnstone},
  journal={Nature},
  year={1967},
  volume={215},
  pages={45-46}
}
THE intensities of 10 keV and 4 keV electrons have been measured from a sounding rocket launched into a post-breakup aurora. Pulsations in electron intensity were observed with a period of about 4 sec at both energies. The 10 keV pulsations occurred about half a second earlier than those at 4 keV. These results could have been caused by temporal changes in electron intensity and by a spatial structure in the path of the rocket because the causes are indistinguishable in the data. We treat the… 
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References

SHOWING 1-3 OF 3 REFERENCES
Observations on pulsating auroras.
Observations on pulsating auroras occurring near the equatorward boundary of auroral displays during their postbreakup phase have been made with an image orthicon television system and with
Time sequences and spatial relations in auroral activity during magnetic bays at College, Alaska
At College (Fairbanks), Alaska, simple magnetic disturbances of negative bay type are closely related to a sequence of change in the type of auroral activity. General features of the relationship