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OJ 287の巨大なバイナリブラックホール系と,一般相対性理論のテスト
M J Valtonen1, H J Lehto, K Nilsson
1Department of Physics and Tuorla Observatory, University of Turku, Vaisäläntie 20, FI-21500 Piikkiö, Finland. mvaltonen2001@yahoo.com
Nature
|April 19, 2008
まとめ
この研究では,クワザールOJ 287の二進体ブラックホールシステムを用いて,アインシュタインの相対性理論を検証しました. 観測により,重力波によるシステムのバイナリー性質とエネルギー損失が確認され,理論的な予測と一致しました.
科学分野:
- 天体物理学 天体物理学
- 一般相対性理論とは
- 重力波は,重力波によって引き起こされる.
背景:
- アインシュタインの一般相対性理論は,通常,弱い重力場でテストされます.
- 強いフィールドテストは,ブラックホールシステムの中で最もよく実行されます.
- バイナリーパルサーは,中性子星の周りの強い場を検知する.
研究 の 目的:
- バイナリブラックホールシステムを用いて強い重力場の中で一般相対性理論をテストする.
- クワザーのバイナリー性質を確認するために OJ 287.
- システムからの重力波放射の証拠を提供するために.
主な方法:
- クワザールからの準周期的な光学爆発の観測 OJ 287.
- これらの爆発のタイミングを分析する.
- 観測されたタイミングを一般相対性理論と二重ブラックホールモデルからの予測と比較.
主要な成果:
- 最新の光学爆発は,予測時間から1日以内に発生しました.
- システムのバイナリー性質が確認されました.
- 重力波の放射に一致する軌道エネルギー損失が観測されました (精度10%以内).
結論:
- OJ 287で観察された現象は,アインシュタインの相対性理論を支持しています.
- このシステムは,重力波放射の有力な証拠を提供している.
- 爆発のタイミングは,重力波による軌道エネルギー損失に敏感です.
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