地球の磁気尾の衝突のない再接続のインシット検出
M Oieroset1, T D Phan, M Fujimoto
1Space Sciences Laboratory, University of California, Berkeley, California 94720, USA. oieroset@ssl.berkeley.edu
Nature
|July 27, 2001
まとめ
磁場からエネルギーを放出するプロセスである磁気再接続は,地球の磁気尾に観察されました. ウィンド宇宙船のデータは,この地域で衝突のない再接続が起きることを確認し,プラズマジェット形成を説明しています.
科学分野:
- 宇宙物理学 宇宙物理学
- プラズマ物理学 プラズマ物理学
- 地質物理学 地質物理学とは地質物理学です.
背景:
- 磁気再接続はエネルギーを放出し,太陽風が地球の磁気圏に侵入することを可能にします.
- 再接続は小さな拡散領域で始まり,プラズマジェットが生成されます.
- 再接続,特に磁気圏での再接続を駆動する正確なプロセスは,議論の余地があります.
研究 の 目的:
- 磁気再接続中のプラズマジェット形成の基礎となる物理的プロセスを調査する.
- 地球の磁気圏における磁気再接続に抵抗性または非衝突性のプロセスが支配するかどうかを判断する.
主な方法:
- この研究は,ウィンド宇宙船が活性磁気再接続拡散領域と偶然出会ったことを報告しています.
- 拡散領域内の in situ 観測を分析し,予測された主要なプロセスを検出しました.
主要な成果:
- 衝突のない再接続モデルによって予測された重要なプロセスが検出されました.
- 観測は,特定の再接続ダイナミクスに関連したプラズマジェット形成の直接的な証拠を提供します.
結論:
- データは,地球の磁気尾に衝突のない再接続が起こることを示しています.
- この発見は,この宇宙の重要な領域における磁気再接続の支配的なメカニズムを明らかにしている.
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