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Updated: Nov 17, 2025

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Published on: November 15, 2013
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Cygnus X-1 には,太陽質量21のブラックホールが含まれています
James C A Miller-Jones1, Arash Bahramian2, Jerome A Orosz3
1International Centre for Radio Astronomy Research-Curtin University, Perth, WA 6845, Australia. james.miller-jones@curtin.edu.au.
まとめ
ブラックホールバイナリ Cygnus X-1 までの距離を精査しました これはブラックホールの質量が高く 恒星の進化過程で 恒星風の質量損失を抑制していることを示唆しています
科学分野:
- 天体物理学
- スター進化
- X線天文学
背景:
- 巨大な星の進化は 恒星風による質量損失によって大きく影響を受けます
- 恒星風はブラックホールのような 凝った残骸の最終質量に影響します
- 正確な距離測定はブラックホールの質量を 決定するのに不可欠です
研究 の 目的:
- ブラックホールからX線バイナリ Cygnus X-1までの距離を精査する
- Cygnus X-1のブラックホールの 正確な質量を決定するために
- 巨大な恒星の質量減少モデルを 制限するために
主な方法:
- Cygnus X-1までの距離を測定するためにラジオ天文計を用いた.
- 新しい距離測定を既存のアーカイブ光学データと組み合わせた.
- ブラックホールの質量を 軌道動態と精密な距離に基づいて 計算した
主要な成果:
- Cygnus X-1までの距離は [FORMULA] kiloparsecであると決定されました.
- ブラックホールの質量は 21.2 ± 2.2 太陽の質量であると計算され,以前の推定値を超えました.
- 高金属環境におけるこの高質量は 現在の恒星の進化モデルに 挑戦しています
結論:
- Cygnus X-1ブラックホールの精密な質量は 恒星の進化論にとって重要なデータを提供します
- 観測結果によると 恒星風は 巨大な恒星から 推測されたよりも 少ない質量を取り除く可能性があります
- この研究は 巨大な星の生命の最終段階を 支配するプロセスに新たな制約を 与えています
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