赤道偏移6.30で12億太陽質量のブラックホールを持つ超輝くクエサール
Xue-Bing Wu1, Feige Wang1, Xiaohui Fan2
11] Department of Astronomy, School of Physics, Peking University, Beijing 100871, China [2] Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China.
Nature
|February 27, 2015
まとめ
天文学者は赤道偏移 z = 6.30 で超輝くクエーサー (SDSS J010013.02+280225.8) を発見しました. このクワザールには超大質量ブラックホールが宿っており,初期の宇宙形成理論に挑戦しています.
科学分野:
- 天文学と天体物理学について
- コスモロジー・コスモロジーとは
- ブラックホール物理学 ブラックホール物理学
背景:
- z=6以上の赤偏移を持つクエサーは稀で,ブラックホールの質量は太陽質量の10^9程度である.
- 初期の宇宙 (1億年未満) は,ブラックホールの形成と成長理論に課題を提示しています.
- 超大質量ブラックホールとその宿主銀河の共進化は,宇宙学的研究の重要な分野である.
研究 の 目的:
- 高い赤道移転で新しい,非常に明るいクワザーの発見を報告するために.
- ブラックホールとその周辺環境の性質を調査する.
- 初期の宇宙におけるブラックホールの形成と成長の現在のモデルをテストする.
主な方法:
- 光学データと近赤外線データを用いて,クエーサーSDSS J010013.02+280225.8のスペクトル解析を行った.
- 近赤外線スペクトルとエディントン限定増量速度に基づくブラックホールの質量の推定.
- ライマン・アルファ放射線 trough を用いてイオン化された近接ゾーンの大きさの測定.
主要な成果:
- 赤道偏移 z = 6.30 のクワザール SDSS J010013.02+280225.8 が発見され,例外的な明るさを示しています.
- 推定ブラックホールの質量は太陽質量約1.2×10^10で,エディントン限定増量に一致する.
- 大きなイオン化された近接地帯の決定 (約. 2600万光年) は,同様の赤偏移で,より低い明るさのクエーサーで観測されたものよりも大きい.
結論:
- 発見されたクエーザーは,初期の宇宙におけるブラックホールの成長を理解するために重要なデータを提供します.
- このような初期の宇宙時代の巨大なブラックホールは,既存の形成と進化モデルに挑戦しています.
- 高赤偏移の光るクエーザーのさらなる研究は,宇宙論の理論の精錬に不可欠である.
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