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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 12, issue 10/11
Ann. Geophys., 12, 1006–1017, 1994
https://doi.org/10.1007/s00585-994-1006-3
© European Geosciences Union 1994
Ann. Geophys., 12, 1006–1017, 1994
https://doi.org/10.1007/s00585-994-1006-3
© European Geosciences Union 1994

  31 Aug 1994

31 Aug 1994

ELF plasma waves in hot and cold plasma fluxes observed by Prognoz-8 in the magnetospheric tail

J. Blecki, B. Nikutowski, P. Koperski, B. Popielawska, K. Kossacki, S. A. Romanov, and S. P. Savin J. Blecki et al.

Abstract. We present Prognoz-8 observations of low-frequency plasma waves (2-105 Hz) associated with plasma fluxes near the outer boundary of the plasma sheet. These plasma fluxes were different from the regular plasma sheet boundary layer and consisted of tailward flowing warm proton and cold oxygen beams accompanied by rather cold electrons (Te less than 100 eV). Observed plasma characteristics were used in the numerical solution of the dispersion relation for the ion-beam acoustic instability. Detailed analysis shows that this instability can be a source of observed emissions at frequencies up to 25 Hz.

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