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ブラックホールのバイナリにおける一般相対論的プレセッション
Mark Hannam1, Charlie Hoy2, Jonathan E Thompson2
1Gravity Exploration Institute, Cardiff University, Cardiff, UK. hannammd@cardiff.ac.uk.
Nature
|October 12, 2022
まとめ
科学者は,GW200129という重力波信号を用いて,初めて,強いフィールドの重力において,スピン誘発の軌道前行を観測した. この発見は現在の二重ブラックホール形成モデルに 異議を唱えるものです
科学分野:
- 天体物理学
- 一般相対性理論
- 重力波天文学
背景:
- スピン誘発の軌道前行は,強い重力における一般相対性理論の重要な予測である.
- 二重ブラックホール (BBH) の合併におけるこの現象に関する以前の探求は不確実であった.
- 天体物理学的なBBH集団は,前進バイナリを含むことが期待されているが,決定的な観測証拠は欠けている.
研究 の 目的:
- BBHシステムにおける 強いフィールドの軌道前退の測定を報告する.
- 主要ブラックホールの性質を 調べるためだ
主な方法:
- LIGO-Virgo-Kagra検出器からのGW200129重力波信号の分析
- 先進的な信号処理技術を使って 先進的な信号処理技術を使って 先進的な信号処理技術を使って
主要な成果:
- GW200129信号におけるスピン誘発の軌道前行を直接検出する.
- 観測されたプレセーションの速度は,以前測定された弱場システムよりも10倍の速さです.
- GW200129の主要なブラックホールは 高いスピンを有していることを示唆しています
結論:
- この観測は,強いフィールドの軌道前行の最初の直接的な証拠を提供します.
- GW200129の特徴は,現在のBBH集団モデルでは統計的に不可能です.
- この発見は,既存のバイナリ形成と進化の理論の再評価を必要とします.
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