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High-speed Particle Image Velocimetry Near Surfaces
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太陽の近隣にある銀河のハロ軌道上の高速ブラックホールです
I F Mirabel1, V Dhawan, R P Mignani
1Service d'Astrophysique/CEA, CE-Saclay, 91191 Gif/Yvette, France. fmirabel@cea.fr
Nature
|September 15, 2001
まとめ
研究者らはブラックホールXTE J1118+480を研究し,このブラックホールの宇宙速度が高いことを発見した. その軌道は,銀河盤からの最近の超新星発射ではなく,初期の銀河系から生まれたことを示唆しています.
科学分野:
- 天文学 (astronomy) 天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは
- 天体物理学 天体物理学
- 恒星の進化について
背景:
- 既知の恒星質量ブラックホールのほとんどは,銀河平面の近くにあります.
- 平面から離れたところに発見されたブラックホールは,超新星からのキックによって放出されたり,古代の残骸であるかもしれません.
- 彼らの動きを理解することは,起源を区別する鍵です.
研究 の 目的:
- ブラックホールX線ノヴァXTE J1118+480.0の横断運動を測定する.
- このブラックホールシステムの起源と軌道特性を調査するために.
主な方法:
- XTE J1118+480の横横運動を空平面で測定しています.
- X線バイナリシステムの軌道パラメータを分析する.
主要な成果:
- XTE J1118+480.0 の大きな空間速度を導出しました.
- 銀河中心の周りを回る,ハローオブジェクトの特徴的な偏心的な軌道を観測した.
- システム特性は,銀河円盤の年齢に匹敵する,またはそれを上回る年齢を示唆しています.
結論:
- ブラックホールの高速と偏心的な軌道は,銀河円盤からの典型的な超新星発射の結果である可能性は低い.
- この発見は,XTE J1118+480が初期の銀河系からの古代の残骸であるという仮説を裏付けている.
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