旅行者1号が土星と遭遇した際の極紫外線観測

A L Broadfoot, B R Sandel, D E Shemansky

Science (New York, N.Y.)

|April 10, 1981

まとめ

土星サターン

科学分野:

惑星科学は惑星科学である.
大気科学大気科学
プラズマ物理学プラズマ物理学

背景:

土星と木星の大気排出量 (水素,ヘリウム,分子水素) の比較.
土星のオーロラメカニズムと磁気圏活動の調査.
土星の環とタイタンの大気組成と現象の特徴.

研究の目的:

土星の大気排出の興奮メカニズムを分析するために.
土星の磁気圏の活動を理解し,それを木星の磁気圏と比較する.
タイタンの大気の組成と構造,土星の磁気圏との相互作用を調査する.

主な方法:

土星とタイタンの紫外線と光学放射の分析.
オーロラ活動と磁気圏のプラズマ相互作用の観測.
大気組成と構造を決定するための太陽遮蔽実験.

主要な成果:

土星の分子水素帯の興奮は,太陽の流れと密接に関連しています.
土星のオーロラは高緯度で発生し,地球のような磁気尾の活動を示しています.
土星のプラズマ圏との相互作用によって強化された,タイタンの日光に検出された窒素排出量;N(2) 支配的な種として特定された. タイタンの四肢の上に観測された二重層構造.

結論:

土星の大気放射とオーロラプロセスは,木星のそれと大きく異なる.
タイタンの大気は主に窒素で構成され,土星の磁気圏とダイナミックに相互作用しています.
観測されたタイタン上の二重層は,目に見える大気層を説明するかもしれない.

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