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Detailed Reference Information |
Ashour-Abdalla, M. and Schriver, D. (1989). A theoretical interpretation of upstreaming electrons and elevated conics on auroral field lines. Geophysical Research Letters 16: doi: 10.1029/88GL04064. issn: 0094-8276. |
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Recent VIKING satellite observations in the auroral zone have shown the association of elevated ion conics (conics with a low energy cutoff above zero) with upward streaming electrons in the presence of low frequency electric field fluctuations. A self-consistent particle simulation was developed which assumed the presence of a steady state electric field on auroral zone field lines capable of accelerating ions up the magnetic field lines. Results from this study show that a low frequency ion-ion two stream instability can be excited. This low frequency instability creates a fluctuating electric field which heats the ions oblique to the magnetic field forming distributions similar to the elevated ion comics. The ion-ion waves also interact resonantly with electrons and accelerates them in the direction of the ion beam. |
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Abstract |
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Keywords
Ionosphere, Auroral ionosphere |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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