旅行者2号が木星と遭遇した際の極紫外線観測
まとめ
旅行者2号は,ボイジャー2号である.
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
- スペクトル顕微鏡検査です.
背景:
- ヴォイジャー1号は,木星の紫外線スペクトロメーターによる初期データを提供した.
- 旅行者2号の遭遇は,木星の現象の観測を拡大した.
研究 の 目的:
- 探査機ボイジャー2が木星系と遭遇した極紫外線のスペクトル観測を分析するために.
- 発見をボイジャー1号のデータと比較し,イオのプラズマ・トーラスと木星のオーロラ・ゾーンの変化を調査する.
主な方法:
- 極紫外線 (EUV) のスペクトル観測.
- 放射線強度とプラズマ温度を分析する.
- オーロラゾーンと磁場投影の相関.
- 分子水素排出量の検出. 分子水素排出量の検出.
- 水素ライマンアルファ排出量の測定.
- 星の隠蔽の観測. 星の隠蔽の観測.
主要な成果:
- イオのプラズマ・トーラス放射の強度は倍増し,ボイジャーとの遭遇の間にプラズマ温度が30%低下した.
- 高緯度のオーロラゾーンは,プラズマ・トーラスの磁気投影と関連していた.
- 赤道地域で検出された分子水素の排出は,惑星全体の電子の降水を示した.
- 水素ライマンアルファ放射は,木星の暗黒側で1キロレイリーで測定されました.
結論:
- ボイジャー2号の観測は,ボイジャー1号の観測を拡張し,木星の磁気圏と大気の動的変化を明らかにした.
- 証拠は,イオのプラズマ・トーラスと木星のオーロラ活動との関係を裏付けている.
- 電子の降水は木星の大気への排出の重要な要因である.
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