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Gravitational wave astronomy - astronomy of the 21st century

机译:引力波天文学--21世纪的天文学

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摘要

An enigmatic prediction of Einstein's general theory of relativity isgravitational waves. With the observed decay in the orbit of the Hulse-Taylorbinary pulsar agreeing within a fraction of a percent with the theoreticallycomputed decay from Einstein's theory, the existence of gravitational waves wasfirmly established. Currently there is a worldwide effort to detectgravitational waves with interferometric gravitational wave observatories ordetectors and several such detectors have been built or being built. Theinitial detectors have reached their design sensitivities and now the effort ison to construct advanced detectors which are expected to detect gravitationalwaves from astrophysical sources. The era of gravitational wave astronomy hasarrived. This article describes the worldwide effort which includes the efforton the Indian front - the IndIGO project -, the principle underlyinginterferometric detectors both on ground and in space, the principal noisesources that plague such detectors, the astrophysical sources of gravitationalwaves that one expects to detect by these detectors and some glimpse of thedata analysis methods involved in extracting the very weak gravitational wavesignals from detector noise.
机译:爱因斯坦广义相对论引力波的一个神秘的预测。在观测到的Hulse-Taylorbinary脉冲星的轨道衰减与爱因斯坦理论的理论计算衰减相差不到一个百分点的情况下,就可以确定地存在引力波。当前,世界范围内正在努力使用干涉式重力波观测器或探测器来检测重力波,并且已经建造或正在建造几种这样的探测器。初始探测器已经达到其设计灵敏度,现在正在努力构建先进的探测器,该探测器有望探测来自天体物理源的引力波。引力波天文学时代已经到来。本文介绍了全球范围内的努力,其中包括印度方面的努力-IndIGO项目-地面和太空干涉式探测器的基本原理,困扰此类探测器的主要噪声源,人们希望通过这些探测器探测到的天体引力波源探测器以及从探测器噪声中提取非常弱的引力波信号所涉及的数据分析方法的一瞥。

著录项

  • 作者

    Dhurandhar, S. V.;

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  • 年度 2011
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  • 原文格式 PDF
  • 正文语种 {"code":"en","name":"English","id":9}
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