Explore the gravitational wave observatory: the precision instrument of laser detection the slight vibration in Washington, the Hanford interferometer gravitational wave observatory interior (Reuters) in the U.S. state of Louisiana LIGO facility Reference News Network reported   French media said, the scientists first glimpse of gravitational waves "Zhenrong" machine that is used for ever advanced in the universe, detected a slight vibration. According to the Agence France-Presse reported on February 11th, the two detectors placed underground in the United States are called laser interferometer gravitational wave observatory (LIGO). One of Washington’s Hanford site, another is located about 3000 kilometers outside of Louisiana, Livingston. It is reported that the construction of the observatory began in 1999, and the observation work was carried out from 2001 to 2007. After that, the two observatories underwent a major upgrade, which increased its function by 10 times. In September 2015, the upgraded advanced LIGO detector began its first round of operation. 14 month, Louisiana’s first detector captures a signal from the 1 billion 300 million years of the southern sky gravitational wave. The wave is a way of measuring fluctuations in space, that is, the motion of massive mass bodies that stretch space-time structures – a way of viewing time and space as a single, interwoven continuum. After 7.1 milliseconds, the Washington probe also captured the same signals, which enabled scientists to prove that the discovery was true. These ultra precision tools work by using a large laser interferometer with a length of about 4 kilometers, the report said. These interferometers are buried in the ground so that they can get the most accurate measurements. The L type instrument tracks gravitational waves from the principles of laser physics and space physics. They don’t look like telescopes, they depend on the light in the sky. They perceive vibrations in space, and this advantage allows them to reveal the properties of black holes. "When a gravitational wave travels through space, it stretches space and time," says David ·, a senior LIGO project leader at Massachusetts Institute of Technology." In brief, the gravitational wave detector is a large instrument that transforms fluctuations in space into electronic signals". 探究引力波观测台:最精密仪器探测最轻微振动   位于华盛顿汉福德的激光干涉引力波观测台内景(路透社) 美国路易斯安那州的LIGO设施   参考消息网报道 法媒称,令科学家们第一次得以窥见引力波“真容”的机器,是有史以来最先进的、用于探测宇宙中最轻微振动的探测仪。   据法新社2月11日报道,置于美国地下的这两台探测仪,名为激光干涉仪引力波观测台(LIGO)。其中一台位于华盛顿的汉福德,另一台位于约3000公里外的路易斯安那州的利文斯顿。   报道称,观测台的建设工作始于1999年,并在2001年到2007年间开展了观测工作。之后,这两个观测台经历了一次重大升级,令其功能增强了10倍。   2015年9月,升级后的高级LIGO探测仪首次开始全面运转。当月14日,路易斯安那州的探测仪首先捕捉到了一个来自13亿年前南部天空的引力波信号。   报道称,这种波是一种对于太空中的波动的测量方式,即拉伸时空结构的大规模质量体的运动所产生的影响——这是一种将时间和空间视为一个单一的、交织的连续统一体的方式。   7.1毫秒后,华盛顿的探测仪也捕捉到了相同的信号,这使得科学家们能够证实这一发现真实不虚。   报道称,这些超精密工具通过利用单个长约4千米的大型激光干涉仪工作。这些干涉仪都被埋在地下,令其能够得出最精确的测量结果。   这种L型仪器根据激光物理学和空间物理学原理追踪引力波。它们不像望远镜那样依赖天空中的光线。它们感知太空中的振动,这种优势令它们可以揭示黑洞的特性。   麻省理工学院的高级LIGO项目负责人戴维·休梅克说:“当一个引力波通过太空传播的时候,它便会拉伸时空。”   报道称,简言之,引力波探测仪“就是一台将太空中的波动转变为电子信号的大型仪器”。相关的主题文章: