関連する実験動画
Updated: Jul 14, 2026

08:38
Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
Published on: April 18, 2019
一般相対性理論のテストは,ダブルパルサーのタイミングから始まります
M Kramer1, I H Stairs, R N Manchester
1University of Manchester, Jodrell Bank Observatory, Macclesfield SK11 9DL, UK. mkramer@jb.man.ac.uk
まとめ
ダブルパルサーシステムPSR J0737-3039A/Bは,一般相対性理論のこれまでで最も正確なテストを提供します. そのユニークな軌道動態は,アインシュタインの理論を0.05%の精度で確認し,重力物理学を前進させました.
科学分野:
- 天文学と天体物理学について
- 重力物理学 重力物理学
背景:
- 二重パルサー系PSR J0737-3039A/Bは,両方の中性子星が検出可能なラジオパルサーであるため,ユニークです.
- これは他のバイナリパルサーよりも高い軌道速度と加速を示しており,強いフィールドの重力テストに最適です.
研究 の 目的:
- ダブルパルサーシステムの精密タイム観測を行うため.
- 一般相対性理論と重力の代替理論の強いフィールドテストを行う.
主な方法:
- 2.5年間のPSR J0737-3039A/B.の精密タイミング観測を利用した.
- 理論独立の質量比を用いて,ケプラーの軌道運動に対する相対論的修正を測定した.
主要な成果:
- これまでに最も正確な一般相対性理論のテストを達成し,ポストケプラーのパラメータ 's' が0.05%の不確実性内の予測に一致しました.
- システムの質量中心の極小の横断速度を決定した.
結論:
- ダブルパルサー系は,将来の重力理論のテストに比類のない機会を提供し,現在の太陽系テストを上回る可能性があります.
- この発見は,第2の誕生パルサーの形成シナリオの代替案を示唆し,ヘリウム星の核崩壊仮説に異議を唱える.
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