2018年2月1日
Electromagnetic Ion Cyclotron Waves Detected by Kaguya and Geotail in the Earth's Magnetotail
Journal of Geophysical Research: Space Physics
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- 巻
- 123
- 号
- 2
- 開始ページ
- 1146
- 終了ページ
- 1164
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/2017JA024505
- 出版者・発行元
- Blackwell Publishing Ltd
Narrowband electromagnetic ion cyclotron waves first discovered by the Apollo 15 and 16 Lunar Surface Magnetometers were surveyed in the magnetic field data obtained by the Kaguya satellite at an altitude of ∼100 km above the Moon in the tail lobe and plasma sheet boundary layer of the Earth's magnetosphere. The frequencies of the waves were typically 0.7 times the local proton cyclotron frequency, and 75% of the waves were left hand polarized with respect to the background magnetic field. They had a significant compressional component and comprised several discrete packets. They were detected on the dayside, nightside, and above the terminator of the Moon, irrespective of the lunar magnetic anomaly, or the magnetic connection to the lunar surface. The waves with the same characteristics were detected by Geotail in the absence of the Moon in the magnetotail. The most likely energy source of the electromagnetic ion cyclotron waves is the ring beam ions in the plasma sheet boundary layer.
- リンク情報
- ID情報
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- DOI : 10.1002/2017JA024505
- ISSN : 2169-9402
- ISSN : 2169-9380
- eISSN : 2169-9402
- ORCIDのPut Code : 47842923
- SCOPUS ID : 85041654214