茶色矮星における風速の測定
Katelyn N Allers1, Johanna M Vos2, Beth A Biller3,4
1Department of Physics and Astronomy, Bucknell University, Lewisburg, PA 17837-2029, USA. katelynallers@gmail.com.
まとめ
科学者たちは ブラウン・ダワーンの東風を 放射能と赤外線で測定しました この技術は,大気中の雲の動きと磁気圏の電波信号を比較し, +650 m/sの強い風を明らかにします.
科学分野:
- 惑星科学
- 天体物理学
- 大気 の 動力
背景:
- ゾナルの風は惑星の大気循環の 重要な要因です
- 木星の大気風は 雲の動きと 放射能を比較して研究されています
- この方法は 色矮星や系外惑星にも適用できます
研究 の 目的:
- 茶色矮星2MASS J10475385+2124234の風速を測定するために
- 赤外線と放射能を 大気動力学と関連付ける新しい技術
主な方法:
- 赤外線と電波の回転周期を比較する.
- 磁気圏からの電波と 赤外線データを利用して
- ブラウン・ダワーに ガス巨大の大気の研究の 原則を適用する
主要な成果:
- ラジオ周期 (1.7511.765時間) と赤外線周期 (1.741±0.007時間) の間に有意な差異が見つかりました.
- この周期差は, +650 ± 310メートル/秒の強い東風を示しています.
- 大気中のジェットストリームや 低摩擦力があることが 示唆されています
結論:
- この研究は,新しい比較期間の分析を用いて,ブラウン・ダワーンの風速を測定することに成功しました.
- 観測された東風は2MASS J10475385+2124234の大気動態の洞察を提供します.
- この技術は,系外惑星の大気の特徴づけに 有望である.
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