木星のオーロラを3~4マイクロメートルの帯域のH3+排出からイメージする
1Institute for Astronomy, University of Hawaii, Honolulu 96822, USA.
Nature
|October 10, 1991
まとめ
新しい画像は,木星のオーロラがダイナミックで,興奮したH3+ (三水素カチオン) 排出が急速に変化していることを明らかにしています. これらのオーロラディスプレイは,これまで理解されていた紫外線および赤外線放射とは異なるプロセスによって引き起こされる可能性があります.
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
- スペクトル顕微鏡検査です.
背景:
- 三水素カチオン (H3+) は,木星のオーロラ地域を研究するための重要な分子です.
- 以前の研究では,H3+を用いて木星のオーロラ条件を調査した.
研究 の 目的:
- H3+の放射を用い,木星のオーロラ領域の高空間解像度画像を提示する.
- 木星のイオノスフィアのH3+排出の空間的分布と時間的変動性を調査する.
主な方法:
- H3+放射に敏感な波長での木星の画像の取得.
- H3+のオーロラ放射の空間的分布と強度の変動の分析.
主要な成果:
- 木星の極地オーロラの高空間解像度の画像が得られた.
- H3+のオーロラ放射の強度は,1時間という短い時間スケールで変化することが観察されました.
- H3+排出量の空間的分布は,紫外線と赤外線のオーロラ活動との部分的な相関のみを示した.
結論:
- H3+の排出は,木星のオーロラダイナミクスに関する貴重な洞察を提供します.
- 急速な変動は,ダイナミックなプロセスが木星の上層大気圏で起こっていることを示唆しています.
- H3+排出を制御するオーロラプロセスは,UVおよびIR排出を制御するプロセスとは異なる場合があります.
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