Observation of Gravitational Waves from a Binary Black Hole Merger
Observation of Gravitational Waves from a Binary Black Hole Merger
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DOI：
10.1103/physrevlett.116.061102
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发表时间：
2016-02-11
影响因子：
8.6
通讯作者：
Zweizig, J.
中科院分区：
文献类型：
--
作者：
Abbott, B. P.;Abbott, R.;Zweizig, J.
2015年9月14日09：50：45 UTC，激光干涉仪引力波天文台的两个探测器同时观测到一个瞬态引力波信号。信号向上扫描，频率从35到250 Hz，峰值引力波应变为1.0 x 10（-21）。它与广义相对论预测的一对黑洞的螺旋和合并以及由此产生的单个黑洞的振铃波形相匹配。观测到的信号匹配滤波器信噪比为24，虚警率估计为每203000年不到1次事件，相当于显著性大于5.1 sigma。该源位于410（-180）（+160）Mpc的光度距离，对应于红移z = 0.09（-0.01）（+0.03）。在源坐标系中，黑洞的初始质量为36（-4）（+5）M（圆点）和29（-4）（+4）M（圆点），最终质量为62（-4）（+4）M圆点，引力波辐射为3.0（-0.5）（+0.5）M（圆点）c（2）。所有不确定性定义为90%可信区间。这些观测结果证明了双星质量黑洞系统的存在。这是第一次直接探测到引力波，也是第一次观测到双黑洞合并。
On September 14, 2015 at 09: 50: 45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from 35 to 250 Hz with a peak gravitational-wave strain of 1.0 x 10(-21). It matches the waveform predicted by general relativity for the inspiral and merger of a pair of black holes and the ringdown of the resulting single black hole. The signal was observed with a matched-filter signal-to-noise ratio of 24 and a false alarm rate estimated to be less than 1 event per 203 000 years, equivalent to a significance greater than 5.1 sigma. The source lies at a luminosity distance of 410(-180)(+160) Mpc corresponding to a redshift z = 0.09(-0.01)(+0.03). In the source frame, the initial black hole masses are 36(-4)(+5)M(circle dot) and 29(-4)(+4)M(circle dot), and the final black hole mass is 62(-4)(+4) M-circle dot, with 3.0(-0.5)(+0.5) M(circle dot)c(2) radiated in gravitational waves. All uncertainties define 90% credible intervals. These observations demonstrate the existence of binary stellar-mass black hole systems. This is the first direct detection of gravitational waves and the first observation of a binary black hole merger.