関連する実験動画
Updated: Jul 12, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
ガリレオの紫外線スペクトロメーター実験:最初の金星と惑星間巡航の結果
まとめ
ガリレオ宇宙船は,金星の大気中のヘリウム,イオン化された酸素,原子水素の排出を検出しました. 星間原子水素がライマン・アルファ放射を支配し,太陽の流れは太陽のサイクルと回転によって変化します.
科学分野:
- 惑星科学は惑星科学である.
- 宇宙物理学 宇宙物理学
- スペクトロスコーピーは,スペクトロスコーピーを用います.
背景:
- 金星は,様々な元素とイオン化された成分を持つ複雑な大気を備えています.
- 太陽風と恒星間介質の相互作用は,惑星のエクソスフィアに大きな影響を与える.
研究 の 目的:
- 極紫外線スペクトロスコピーを用いて金星の大気放射を分析する.
- 太陽系におけるライマン・アルファ放射の源と変異を調査する.
主な方法:
- ガリレオの極紫外線スペクトロメーターを使ってスペクトルを捕捉しました.
- 観測された放射は,3.5nm解像度で55.0〜125.0ナノメートルの波長範囲で観測されました.
- モデル化されたガリレオの観測は,太陽の最大値の間に行われます.
主要な成果:
- ヘリウム (58.4 nm),イオン化された原子酸素 (83.4 nm),原子水素 (121.6 nm) の放射が検出されました.
- 原子水素 (ライマンベータ) と原子酸素 (102.5 nm) の混合特性を観測した.
- 星間原子水素をライマン・アルファ放射の主な源として特定し,太陽流動の変動を記録した.
結論:
- ガリレオの観測は,金星の上層大気の詳細なスペクトルデータを提供しています.
- 星間原子水素は,太陽系のライマン・アルファ放射に重要な役割を果たしています.
- 太陽活動がライマン・アルファ流動に大きく影響し,太陽の周期と回転の変動を示しています.
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