静かな太陽の中に,かなりの量の隠された磁気エネルギーは隠されている
J Trujillo Bueno1, N Shchukina, A Asensio Ramos
1Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain.
Nature
|July 16, 2004
まとめ
研究者らは,静かな太陽光圏に隠された,絡み合った磁場を発見した. この無所不在のフィールドは,粒子の間の領域でより強く,冠状熱を含む太陽と恒星の物理に大きな影響を与える.
科学分野:
- ソーラー物理学 ソーラー物理学
- 恒星物理学 恒星物理学
- マグネトヒドロダイナミクス
背景:
- 静かな太陽光球の小規模な磁気活動を理解することは,太陽と恒星の物理学の重要な問題を解決するために不可欠です.
- 現在の観測方法では,太陽の静かな磁力の約1%しか明らかにできず,新しい調査技術が必要となった.
研究 の 目的:
- 静かな太陽光圏のサブ解像度スケールで,隠された,混合極性磁場を調査するために.
- 先進的なモデリングと観測データを組み合わせて,太陽の磁場を特徴づける.
主な方法:
- 原子と分子線における散乱偏振の3次元放射伝送モデリング.
- 先進的なモデリングの結果と最近の観測データとの統合.
主要な成果:
- 亜解像度スケールでの混合の極性を持つ,無所不在で絡み合った磁場の証拠.
- 平均磁場強度は約130Gで,粒子の間の領域では粒子の領域よりもかなり強い.
- 磁気エネルギー密度は,以前に推定されたより少なくとも2倍の大きさで,染色球の放射能エネルギー損失を均衡させるのに十分である.
結論:
- 静かな太陽光球は,これまで理解していたよりもはるかに強力で複雑な磁場を保持しています.
- この隠された磁場は,太陽の大気結合と冠状熱に重要な役割を果たしています.
- この発見は,太陽磁場モデルの再評価と,恒星物理学への影響が必要である.
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