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M87の回転するブラックホールと接続するプレセッシングジェットノズル
Yuzhu Cui1,2,3,4, Kazuhiro Hada5,6, Tomohisa Kawashima7
1Research Center for Intelligent Computing Platforms, Zhejiang Laboratory, Hangzhou, China. yuzhu_cui77@163.com.
Nature
|September 27, 2023
まとめ
研究 者 たち は,M87 銀河 の 22 年 の ラジオ 観測 を 分析 し まし た. 彼らはジェット機で11年の期間を発見しました
科学分野:
- 天体物理学
- ラジオ天文学
- ブラックホール物理学
背景:
- 超大質量ブラックホールや 相対論ジェットを研究するための ユニークな研究室を提供しています
- 以前の観測では,ジェット開口の角度が大きく,横向きのシフトが,おそらく8-10年の準周期性に関連していることが示されました.
- イベントホライズン望遠鏡は中央の電波源を解明し,不対称なリング構造を明らかにしました.
研究 の 目的:
- M87で観測された横向きのジェットシフトの起源を調査するために
- ジェット位置の周期的な変化を特定するために,長期間の無線観測を分析する.
- 蓄積円盤とブラックホールの相互作用の ダイナミクスを理解するために
主な方法:
- M87の22年間の無線観測データの分析
- ジェットの位置角度の周期的な変化を検出するタイムシリーズ分析.
- 観測されたジェット行動に責任を持つ物理的プロセスを推測するモデリング.
主要な成果:
- ジェットの位置の角度の変化で11年の期間が特定されました.
- 観測されたジェット・プレセーションは 回転するブラックホールと一致します
- レンズ・ティリング・プレセーションの 誤った収縮円盤を 示唆している.
結論:
- M87の11年のジェット・プレセシオンは 旋回するブラックホールと不整合の蓄積円盤によって引き起こされているようです
- ジェット・プレセシオンは 活発な銀河の核に共通する現象であるが,しばしば検出が困難である.
- この研究は,ブラックホール,蓄積円盤,相対論ジェット間の複雑な関係に重要な洞察を提供します.
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