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超大質量ブラックホールのラーム圧力供給
Bianca M Poggianti1, Yara L Jaffé2, Alessia Moretti1
1INAF-Astronomical Observatory of Padova, vicolo dell'Osservatorio 5, 35122 Padova, Italy.
Nature
|August 18, 2017
まとめ
銀河団の圧縮によって ガスが活性な銀河の核に 供給されます この研究で分かったのは ほとんどの水母星系は 活発な核を宿しているということです つまり ラムの圧力が 餌の過程を誘発しているということです
科学分野:
- 天文学
- 天体物理学
- 銀河の進化
背景:
- 活発な銀河核 (AGN) は,超大質量ブラックホールが物質を蓄積することで動いている.
- 銀河の中心へのガスの流れと 銀河からのガスの除去は 銀河の進化の重要なプロセスです
- 銀河からガスを取り除くための既知のメカニズムである.
研究 の 目的:
- ラムプレッシャー剥離とメダウスの銀河の活性銀河核の発生率との関係を調査する.
- 超大質量ブラックホールに 栄養を与える物理的過程を 特定するためです
主な方法:
- 7つの水母銀河のサンプルを観察して分析した.
- これらの銀河の核活動とイオン化コンの評価
- 銀河団に対する銀河の位置と速度の分析.
主要な成果:
- サンプル内の7つの水母銀河のうち6つは 活発な核を宿しています
- これらの銀河の2つには 銀河規模のイオン化コーンがあります
- 銀河の中心へのガス流入のメカニズムとして ラム圧力を強く支持しています
結論:
- ラム圧力剥離は,メダウスの銀河で活発な銀河核を誘発する重要な要因です.
- このプロセスは中央の超大質量ブラックホールに 栄養を与えるための 実行可能なメカニズムを提供します
- ラム圧力とAGN活動の相互作用は複雑なフィードバックループである可能性があります.
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