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矮星爆発銀河のヘニゼ2-10にある,活発に蓄積している巨大なブラックホール
Amy E Reines1, Gregory R Sivakoff, Kelsey E Johnson
1Department of Astronomy, University of Virginia, 530 McCormick Road, Charlottesville, Virginia 22904, USA. areines@virginia.edu
Nature
|January 11, 2011
まとめ
科学者たちは,矮星銀河ヘニゼ2-10で,活発に蓄積しているブラックホールを発見した. この発見は,巨大なブラックホールの成長は,大きな銀河構造が形成される前に起こることが可能であることを示唆し,初期の宇宙のブラックホールの進化への手がかりを提供している.
科学分野:
- 天体物理学 天体物理学
- 銀河の進化 銀河の進化 銀河の進化
- ブラックホール形成.
背景:
- 超大質量ブラックホールは,ほとんどの巨大銀河に存在する.
- 初期の宇宙のブラックホールの形成と進化は,まだ十分に理解されていない.
- 矮星銀河は,初期の銀河とブラックホール組成についての洞察を提供します.
研究 の 目的:
- 近くの矮星銀河におけるブラックホールの存在と活動を調査する.
- ブラックホールの成長と銀河の形成の関係を理解するために.
- 宇宙におけるブラックホールの進化の初期段階を調査する.
主な方法:
- コンパクトな中央源を検出するための無線観測.
- ブラックホールの蓄積を特定するためのハードX線観測.
- 中央のブラックホールの質量推定.
主要な成果:
- Henize 2-10の中心部でコンパクトな無線源が特定されました.
- この無線源は,硬質のX線源と一致しています.
- Henize 2-10は,約100万太陽質量のブラックホールを主催しています.
- この銀河は,その巨大なブラックホールとともに,激しい恒星形成を示しています.
結論:
- 近くの恒星形成の矮星銀河は,巨大なブラックホールを宿すことができます.
- ブラックホールの成長は,銀河球体の形成に先行する可能性がある.
- Henize 2-10は,ブラックホールと質量アセンブリの間,初期の宇宙の銀河のアナログとして機能します.
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