On Arrival Time Difference Between Lensed Gravitational Waves and Light
On Arrival Time Difference Between Lensed Gravitational Waves and Light
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DOI：
10.3847/1538-4357/ab8d3f
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发表时间：
2020-03
期刊：
影响因子：
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通讯作者：
T. Suyama
中科院分区：
文献类型：
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作者：
T. Suyama
众所周知，如果传播波的波长变得与透镜物体的史瓦西半径相当或大于史瓦西半径，则几何光学不再适用于引力透镜。我们研究了引力波在波动光学中的传播，特别关注它们的到达时间与光的到达时间之间的差异。我们认为，与以前的工作中的观察相反，当引力波和光同时从同一个源发射时，引力波永远不会比光更早到达观察者。
It is known that geometrical optics no longer applies to gravitational lensing if the wavelength of a propagating wave becomes comparable to or larger than the Schwarzschild radius of a lensing object. We investigate the propagation of gravitational waves in wave optics, particularly focusing on the difference between their arrival time and the arrival time of light. We argue that, contrary to the observation in the previous work, gravitational waves never arrive at an observer earlier than light when both gravitational waves and light are emitted from a same source simultaneously.