引力波官方论文中英对照【机器翻译】.doc

Observation of GravitationalWaves from a Binary Black Hole Merger The LIGO Scientific Collaboration and The Virgo Collaboration On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitationalwave Observatory (LIGO) simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from 35 Hz to 250 Hz with a peak gravitational-wave strain of 1:0 _ 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 signalto- 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 _. The source lies at a luminosity distance of 410+160 ??180 Mpc corresponding to a redshift z = 0:09+0:03 ??0:04. In the source frame, the initial black hole masses are 36+5 ??4M_ and 29+4 ??4M_, and the final black hole mass is 62+4 ??4M_, with 3:0+0:5 ??0:5M_c2 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. PACS numbers: 04.80.Nn, 04.25.dg, 95.85.Sz, 97.80.-d Introduction — In 1916, the year after the final formulation of the field equations of general relativity, Albert Einstein predicted the existence of gravitational waves. He found that the linearized weak-field equations had wave solutions: transverse waves of spatial strain that travel at the speed of light, generated by time variations of the mass quadrupole moment of the source [1, 2]. Einstein understood 从一个黑洞的合并gravitationalwaves观察 LIGO科学合作和处女座的合作 在09:50:45 UTC两探测器的激光干涉引力波2015年9月14日 天文台（LIGO）同时观察到一个短暂的引力波信号。信号 把以上的频率从35赫兹到250赫兹以1:0 _ 1021峰引力波应变。 它与波形的灵感和一对广义相对论所预言的黑洞合并 和由此产生的单一黑洞的响铃。一个匹配滤波器的信号，观察信号