プラズマスフィアのシズルの予期せぬ起源は,離散の合唱の放出からの離散の合唱の放出である

Jacob Bortnik¹, Richard M Thorne, Nigel P Meredith

¹Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095, USA. jbortnik@gmail.com

Nature

|March 7, 2008

まとめ

合唱の波は,プラズマ圏のシズルに変化し,地球の磁気圏における重要なプロセスである. この発見は,ヒースの性質と,宇宙ミッションにおける放射線の危険を管理する役割について説明します.

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
電磁気学は,電磁気学である.

背景:

プラズマスフィアのシス (plasmaspheric hiss) は,地球のプラズマスフィアに至る所に存在する電磁波である.
Hissは,高エネルギー電子を除去し,衛星や宇宙飛行士の放射線リスクを軽減する上で重要な役割を果たしています.
既存の理論は,プラズマ球の観測された性質を完全に説明できない.

研究の目的:

プラズマ球音の起源を調査するために.
合唱波とプラズマ球音の間のリンクを確立するために.
ヒスの観測された特徴を説明するモデルを開発する.

主な方法:

コーラス波のプラズマ圏への伝播をモデリングする.
合唱の波が hiss へと進化した過程を分析する.
モデルの予測を,観察されたシズ特性と比較する.

主要な成果:

コーラス波は,遠距離からプラズマ圏に伝播し,シズリへと進化することができます.
提案されたモデルは,ヒースの周波数帯,不協和な性質,空間分布をうまく説明しています.
このモデルは,ヒスの昼夜不対称性と太陽活動との関連性についても説明しています.

結論:

コーラス波は,プラズマ球の音源として特定されています.
この発見は,コーラス現象とシス波現象の両方についての統一された理解を提供します.
この研究は,磁気圏における高エネルギー電子集団の調節におけるシスの役割を明らかにしている.

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