Right‐handed ion/ion resonant instability in the plasma sheet boundary layer: GEOTAIL observation in the distant tail

H. Kawano, M. Fujimoto, T. Mukai, T. Yamamoto, T. Terasawa, Y. Saito, S. Machida, S. Kokubun, A. Nishida

研究成果: ジャーナルへの寄稿学術誌査読

19 被引用数 (Scopus)

抄録

An excellent example of an onset of the right‐handed ion/ion resonant instability is observed on October 8, 1993, when the Geotail was in the distant tail of XGSM = −142RE. Preceding and following a passage of a plasmoid, magnetic noises having a right‐hand circular polarity with the frequencies around the proton cyclotron frequency are detected. Especially, the event after the passage lasted for more than 10 min., and the ion plasma in this boundary layer was composed of a tailward streaming cold dense plasma and a warm tailward beam coming presumably from the plasma sheet, drifting at 1000 km/s relative to the former along the field line. We have used this distribution as a source function for a linear Vlasov analysis, and confirmed that the generation mechanism of the waves can well be explained in terms of the resonant interaction with the beam.

本文言語英語
ページ(範囲)2887-2890
ページ数4
ジャーナルGeophysical Research Letters
21
25
DOI
出版ステータス出版済み - 12月 15 1994
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 地球物理学
  • 地球惑星科学一般

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