地球の磁気圏の構造,力バランス,およびトポロジー
C T Russell1, R J Strangeway2, C Zhao2
1Earth Planetary and Space Sciences, University of California, Los Angeles, CA 90095, USA. ctrussell@igpp.ucla.edu.
Science (New York, N.Y.)
|June 3, 2017
まとめ
地球の磁気盾である磁気断層には 太陽風の相互作用に影響を与える亜層があります 複雑な電子の流れは この境界で磁気ロープを作り出します
科学分野:
- 宇宙物理学
- プラズマ物理学
- 地理学
背景:
- 磁気圏は太陽風が地球の磁気圏と相互作用する 臨界層である.
- この相互作用を理解することは 宇宙天候とその地球への影響を理解する鍵です
研究 の 目的:
- マグネトパウスのプラズマと磁気力を調べる
- 磁気圏内の亜層構造と電子の振る舞いを分析する.
- 太陽風と地球の磁気圏の相互作用に どのように影響を与えるかを決定する.
主な方法:
- マグネトスフィア マルチスケール (MMS) ミッションからの複数の宇宙船の測定を用いて.
- プラズマと磁気力をプラズマ圧力と比較する.
- 電子配分関数を調べる
主要な成果:
- マグネトパウスはイオンスケールに匹敵する厚さの亜層を示している.
- 磁気圏内の特定の領域は,磁場強度が低く,曲線半径が小さく,電流が高く特徴付けられています.
- パラレルと反パラレル運動を含む複雑な電子の流れパターンは,磁気ロープの形成につながります.
結論:
- マグネトパウスは 複雑な亜層構造を持つ ダイナミックな境界線です
- 電子拡散領域はエネルギー転送プロセスにおいて重要な役割を果たします.
- 磁気ロープの形成は,太陽風と磁気圏のカップリングに影響を与える,複雑なトポロジーを示しています.
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