地球規模の電子輸送が木星の内部磁気圏に存在している証拠
K Yoshioka1, G Murakami2, A Yamazaki2
1Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan. kazuo@stp.isas.jaxa.jp.
まとめ
木星,木星,木星,木星,木星,木星,木星,木星,木星,木星,木星,木星,木星,木星,木星
科学分野:
- 宇宙物理学 宇宙物理学
- プラズマ物理学 プラズマ物理学
- 惑星科学は惑星科学である.
背景:
- 木星の磁気圏は,超相対性電子を含む粒子を加速します.
- 熱い電子によって駆動されるウィスラーモード波は,この加速の鍵です.
- 木星の内部磁気圏の電子輸送機構は不明のままである.
研究 の 目的:
- 木星の磁気圏内部の熱い電子の輸送を調査するために.
- ウィスラーモードの波を刺激する電子の源を理解するために.
主な方法:
- 木星の内部磁気圏からの極紫外線 (EUV) 線放射の分析.
- 高スペクトル解像度スキャンによるIoプラズマトーラス観測.
- 熱い電子分子の放射プロファイルの生成.
主要な成果:
- 熱いプラズマを含むフクロスチューブのグローバル内側輸送の証拠が見つかりました.
- 熱い電子の分数は,磁気圏内部の半径距離の減少に伴い減少する.
- 観測されたプロファイルは,急速な熱化と矛盾しており,継続的な補給が示唆されています.
結論:
- 熱プラズマ流管の内側への輸送は,木星の磁気圏における重要なプロセスである.
- その存在を維持するために,熱い電子の継続的な補給が必要である.
- この再供給は,粒子加速を司るホイッスルモードの波に燃料を供給する.
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