土星の磁気圏のエネルギー有電粒子:ボイジャー2の調査結果
Science (New York, N.Y.)
|January 29, 1982
まとめ
ヴォイジャー2号は,土星のより強烈で変動する宇宙線陽子と電子の流れを検出しました.
科学分野:
- 惑星科学は惑星科学である.
- 磁気圏物理学 磁気圏物理学
- 宇宙線物理学 宇宙線物理学
背景:
- ヴォイジャー2号は土星の磁気圏のインサイト測定を行った.
- 以前の観測により,土星の磁気圏のベースライン条件が確立されました.
研究 の 目的:
- ボイジャー2号の宇宙線システムから得られた結果を紹介するためです.
- 粒子流動の変動とその原因を分析する.
- 衛星の吸収シグネチャーを用いて,土星の内部磁気二極を制圧する.
主な方法:
- ヴォイジャー2号からの宇宙線システムデータの分析.
- 土星の磁気圏における陽子と電子の流れの観測.
- ミマス,エンケラドス,テティスの有電粒子吸収シグネチャーを用いて.
主要な成果:
- 増加した陽子流量 (> 0.43 MeV) と,インバウンドパス中の陽子と電子の流れのより大きな変動.
- 衝動的な電子爆発 (0.14-1.0 MeV) は,土星の半径18を超えて観測されました.
- サターンの半径3点近くで一時的な電子の流れが減少し,ミマスに起因するものではなく,追加の物質を示唆している.
結論:
- 観測された粒子の流れの変化は,太陽風の変動に起因する.
- 衛星の吸収シグネチャーは,土星の磁気二極の傾きと偏移を制限する.
- 証拠は,ミマスの軌道に未確認の物質または衛星が存在することを示唆しています.
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