Wide binaries as a critical test of classical gravity
Wide binaries as a critical test of classical gravity
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宽双星作为经典引力的关键测试
DOI：
10.1140/epjc/s10052-012-1884-6
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
C. Allen
中科院分区：
文献类型：
--
作者：
X. Hernández;M. A. Jiménez;C. Allen
已经提出了修改的重力情景，其中在加速度标度a<a0时出现状态变化。由于对于1 M ⊙系统，在7000 Au左右的尺度下，加速度降至a0以下，因此对相对速度和间距达到104 Au及以上的宽双星进行统计调查应该对上述辩论有用。我们将建议的测试应用于目前最好的数据。结果表明，在宽双星的相对速度是一个恒定的上限，这是独立的分离超过三个数量级，在类似的银河系平坦的旋转曲线在相同的a<a0的加速度制度。我们的研究结果表明，开普勒第三定律的故障超出了1000尺度，根据修改后的引力理论的一般预测，设计不需要任何暗物质在银河系尺度及以上。
Modified gravity scenarios where a change of regime appears at acceleration scales a<a0 have been proposed. Since for 1M⊙ systems the acceleration drops below a0 at scales of around 7000 AU, a statistical survey of wide binaries with relative velocities and separations reaching 104 AU and beyond should prove useful to the above debate. We apply the proposed test to the best currently available data. Results show a constant upper limit to the relative velocities in wide binaries which is independent of separation for over three orders of magnitude, in analogy with galactic flat rotation curves in the same a<a0 acceleration regime. Our results are suggestive of a breakdown of Kepler’s third law beyond a≈a0 scales, in accordance with generic predictions of modified gravity theories designed not to require any dark matter at galactic scales and beyond.