太陽染色球と移行領域における小規模な歪みの流行について
B De Pontieu1, L Rouppe van der Voort2, S W McIntosh3
1Lockheed Martin Solar and Astrophysics Laboratory (LMSAL), 3251 Hanover Street, Organization A021S, Building 252, Palo Alto, CA 94304, USA. Institute of Theoretical Astrophysics, University of Oslo, Post Office Box 1029, Blindern, N-0315 Oslo, Norway. bdp@lmsal.com.
Science (New York, N.Y.)
|October 18, 2014
まとめ
NASAのIRISとSST望遠鏡によって太陽染色球と移行領域 (TR) で観測された歪み運動は,太陽の下層大気がどのように加熱されるかを説明する可能性がある. これらのトルション運動は,太陽の異なる領域に広く広がっています.
科学分野:
- ソーラー物理学 ソーラー物理学
- プラズマ天体物理学とは
- 宇宙 天気 スペース天気
背景:
- 太陽の染色球と移行領域 (TR) は,太陽の大気エネルギーが熱に変換される重要なインターフェースです.
- 太陽の大気,特にクロモスフィアとTRを熱する正確なメカニズムは,ほとんど不明のままです.
- このエネルギー移転の理解は,太陽の動力学と宇宙天候現象の理解に不可欠です.
研究 の 目的:
- 太陽の染色球と移行領域の加熱における回転運動や扭転運動の役割を調査する.
- 様々な太陽光領域におけるこれらの運動の発生率と特徴を定量化する.
- 観測された歪み運動と大気の急速な加熱との関係を確立するため.
主な方法:
- NASAのインターフェース・リージョン・イマージング・スペクトログラフ (IRIS) の高解像度観測を用いて,0.33弧秒の解像度を用いた.
- スウェーデンの1メートル太陽望遠鏡 (SST) のデータとIRISの観測を調整した.
- 観測データを分析し,次弧二度スケールの回転運動と関連する温度上昇を特定し,定量化しました.
主要な成果:
- 太陽の染色球とTR全域に広がった二次弧次スケールの歪みまたはトルション運動を明らかにした.
- これらの運動は,活発な領域,静かな太陽領域,および冠状の穴で観察されました.
- これらの回転の動きと,TR温度に達した急速な加熱の出来事との間には,相関関係があることを発見しました.
結論:
- 扭転運動は太陽染色球の重要な特徴であり,異なる太陽環境におけるTRである.
- これらの回転の動きは,太陽の下層大気の急速な加熱と強く関連しています.
- この発見は,太陽の大気を暖めるエネルギーの分散メカニズムに関する重要な洞察を提供します.
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