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Updated: May 13, 2026
11:20
Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
赤いシフトz約3で若い巨大な銀河から銀河全体のスーパーウィンドの発見
R J Wilman1, J Gerssen, R G Bower
1Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK. r.j.wilman@durham.ac.uk
Nature
|July 15, 2005
まとめ
高速の銀河流出は,恒星形成地域だけでなく,銀河全体に影響を及ぼします. 観測により,銀河から放出される広範囲で一貫したガスのスクリーンが明らかになり,超風が銀河全体に及ぼす効果が実証されました.
科学分野:
- 宇宙の進化は宇宙の進化である.
- 銀河の形成と進化について
- 天体物理学 天体物理学
背景:
- 銀河の流出は,銀河の進化理論にとって極めて重要であり,星形成を調節し,銀河間媒体を豊かにする.
- 高赤偏移の銀河の以前の観測は,これらの流出の空間的な範囲について不明確でした.
研究 の 目的:
- 高赤位移転銀河における高速度銀河流出の空間的な範囲と影響を調査する.
- アウトフローが銀河全体に影響するか,局所的かどうかを判断する.
主な方法:
- 赤道偏移 z = 3.09.の恒星形成銀河の二次元スペクトロスコピー.
- 空間的に拡張されたライアルファ線放射とH i吸収の分析.
- 吸気ガスのスクリーンの横幅と速度の相関を測定する.
主要な成果:
- z = 3.09.の銀河から空間的に拡張されたライアルファ放射を観測した.
- 放射は,銀河全体を覆う前景のHi画面によって吸収されたことがわかりました.
- 画面の横幅は少なくとも100 kpcで,速度の相関性が顕著でした.
- このスクリーンは,過去のスターバーストで銀河系から放出され,銀河間媒質を席巻していた.
結論:
- 高速の銀河外流,または超風は,銀河全体に影響を及ぼします.
- これらのアウトフローは,銀河とその周辺の銀河間媒介に大きな影響を与える可能性があります.
- 観測された現象は,初期の宇宙におけるスターバーストによる流出による大規模な結果を示しています.
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