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Launching the era of gravitational-wave astrophysics

机译:开启引力波天体物理学时代

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摘要

Gravitational waves were a prediction of Einstein's Theory of General Relativity in 1916. Einstein himself was rather pessimistic about the prospect of ever detecting them, perhaps justifiably, since their measurable effects are tiny. Indeed gravitational radiation from even the most promising sources, such as pairs of neutron stars or black holes colliding in nearby galaxies, were predicted to cause minuscule changes in spacetime here on the earth: gravitational wave strain - or change in length per length - of order 10-21.
机译:引力波是对爱因斯坦1916年广义相对论的预测。爱因斯坦本人对有可能合理地检测到它们的前景感到悲观,因为它们的可测量效果很小。实际上,据预测甚至来自最有前途的源的引力辐射,例如成对的中子星或黑洞在附近的星系中碰撞,也会在地球上引起时空的微小变化:引力波应变-或每单位长度的长度变化-数量级10 -21

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