GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
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DOI：
10.1103/physrevlett.119.141101
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发表时间：
2017-10-06
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.
2017年8月14日10：30：43 UTC，Advanced Virgo探测器和两个Advanced LIGO探测器相干地观测到两个恒星质量黑洞合并产生的瞬态引力波信号，误报率小于或接近27000年1次。用信噪比为18的三检测器网络匹配滤波器观察信号。初始黑洞的推断质量为30.5（-3.0）（+5.7）M（圆点）和25.3（-4.2）（+2.8）M圆点（在90%的可信水平）。该源的光度距离为540（-210）（+130）Mpc，对应的红移为z = 0.11（-0.04）（+0.03）。由三个探测器组成的网络改善了源的天空定位，将90%可信区域的面积从仅使用两个LIGO探测器的1160度（2）减少到使用所有三个探测器的60度（2）。这是第一次，我们可以从LIGO-Virgo网络的天线响应中测试引力波偏振的性质，从而实现了一类新的引力现象学测试。
On August 14, 2017 at 10:30:43 UTC, the Advanced Virgo detector and the two Advanced LIGO detectors coherently observed a transient gravitational-wave signal produced by the coalescence of two stellar mass black holes, with a false-alarm rate of less than or similar to 1 in 27 000 years. The signal was observed with a three-detector network matched-filter signal-to-noise ratio of 18. The inferred masses of the initial black holes are 30.5(-3.0)(+5.7)M(circle dot) and 25.3(-4.2)(+2.8) M-circle dot (at the 90% credible level). The luminosity distance of the source is 540(-210)(+130) Mpc, corresponding to a redshift of z = 0.11(-0.04)(+0.03). A network of three detectors improves the sky localization of the source, reducing the area of the 90% credible region from 1160 deg(2) using only the two LIGO detectors to 60 deg(2) using all three detectors. For the first time, we can test the nature of gravitational-wave polarizations from the antenna response of the LIGO-Virgo network, thus enabling a new class of phenomenological tests of gravity.