超大質量ブラックホールの蓄積付近で動的に重要な磁場がある
M Zamaninasab1, E Clausen-Brown1, T Savolainen1
1Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany.
Nature
|June 6, 2014
まとめ
超大質量ブラックホールの噴射ジェットには,ダイナミックに重要な磁場があります. これらのフィールドは,蓄積円盤の光度と相関し,ジェット形成とブラックホールの蓄積過程に影響を与えます.
科学分野:
- 天体物理学 天体物理学
- ブラックホール物理学 ブラックホール物理学
- プラズマ物理学 プラズマ物理学
背景:
- 超大質量ブラックホールの収束は相対論ジェットを生成する.
- 磁場は,ジェット形成と蓄積円盤物理学の決定的に重要であると仮定されています.
- 以前の観測は,銀河中心のブラックホールの近くで,動的に重要な磁場があることを示唆していた.
研究 の 目的:
- ジェット発射地域における磁場と蓄積円盤の光度との関係を調査する.
- ダイナミックに重要な磁場が,無線で騒がれる活発な銀河に共通しているかどうかを判断する.
- これらの磁場が蓄積円盤の性質とジェットダイナミクスに与える影響を理解するために.
主な方法:
- 76個の無線で活発な銀河のサンプルを分析した.
- ジェット磁場強度の相関測定と,積分円盤の輝度が7つの大きさで測定された.
主要な成果:
- ジェット磁場強度と蓄積円盤の光度との間には密接な相関が認められた.
- この相関は7桁の大きさで,普遍的な関係を示しています.
- 動的に重要な磁場は,これらの銀河のジェット発射領域に存在しています.
結論:
- ラジオ騒音の活発な銀河のジェット発射領域は,ダイナミックに重要な磁場によってスレッドされています.
- これらの磁場は,ガスインフォールと角運動量輸送を含む,蓄積円盤の特性に大きな影響を与える.
- 磁場はジェットの方向性や形成を決定する上で重要な役割を果たします.
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