土星の磁気圏のエネルギー有電荷粒子:ボイジャー1号の調査結果
Science (New York, N.Y.)
|April 10, 1981
まとめ
ヴォイジャー1号は,土星の磁気尾と外側の磁気圏を明らかにし,エネルギー粒子行動と衛星による吸収を詳細に説明しました. 陽子流は柔らかいスペクトルを示し,惑星間条件に関連した変動性を示した.
科学分野:
- 惑星科学は惑星科学である.
- プラズマ物理学 プラズマ物理学
- 宇宙物理学 宇宙物理学
背景:
- ヴォイジャー1号は,土星の磁気圏と磁気尾に関する前例のないデータを提供した.
- パイオニア11号の以前の観測は,比較ベースラインを提供した.
研究 の 目的:
- 土星の外部磁気圏と磁気尾のエネルギー粒子集団を分析するために.
- タイタンとリアによって引き起こされる吸収特性を調査するために.
- ボイジャー1号の発見とパイオニア11号のデータを比較するためです.
主な方法:
- ボイジャー1号によるエネルギー粒子のインシトゥ測定.
- 粒子スペクトルとフクス変動の分析.
- パイオニア11号の以前の観測データとデータの比較.
主要な成果:
- 閉じ込められた陽子の観測された柔らかいエネルギースペクトル (ガンマ ≈ 7 外部磁気圏,ガンマ ≈ 9 磁気尾).
- 検出された磁気尾の構造は,土星半径10 (R(s)) に近い.
- 陽子と電子の流れが変動し,惑星間条件に反応することが判明した.
- >2 MeVのプロトンが自由にアクセスでき,7.5 R{\s}を超えて安定的に閉じ込められることはなかった.
結論:
- ボイジャー1号は,静かな条件下で土星の磁気尾と外側の磁気圏を初めて詳細に観察した.
- 粒子集団と磁気圏の構造は,外部の条件と月の相互作用によって影響を受けます.
- エネルギー粒子捕獲の境界線とスペクトル特性を定義しました.
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