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Auroral Plasma Dynamics (Lysak/Auroral Plasma Dynamics) by R.T. Goerke; P.J. Kellogg; S.D. Bale; S.J. Monson; H.R. Anderson; D.W. Potter; E.P. Szuszczewicz; G.D. Earle is a Earth and Planetary Sciences article available to read on EtoBox.

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We have observed moderately strong HF (high frequency -4 MHz) plasma waves with amplitudes in excess of .1 mV/m(Hz)1/2 at frequencies slightly less than the ambient plasma frequency and about 2 to 3 times the electron cyclotron frequency. These observations coincide with in situ measurements of broad band low energy (10 eV to 600 eV) auroral electrons and ground-based observations of auroral luminosity. These results were obtained from the rocket-borne experiment SCEX 3 (Several Compatible Experiments Using a Rocket-Borne Accelerator), NASA Flight 39.002 UE, launched February 1, 1990 from Poker Flat Research Range. The frequency and intensity of the HF emissions are modulated at the spin period of the spacecraft in such a way that they appear like saucers on frequency-time spectrogram. This indicates that the source of these observations is a directional wave. If these waves are transverse (electromagnetic), then the k vector points in the north/south direction, which is consistent with an auroral source. Due to the lack of an observable interference pattern, we assume the waves have a wavelength that is much larger than the antenna length (2 m). These waves are seen consistently a

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Author

R.T. Goerke; P.J. Kellogg; S.D. Bale; S.J. Monson; H.R. Anderson; D.W. Potter; E.P. Szuszczewicz; G.D. Earle

Publisher

American Geophysical Union

Published

2013

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)