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arXiv 2007.08118gr-qc
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径向运动Schwarzschild黑洞赤道面上光的引力频移

Gravitational frequency shift of light in equatorial plane of a radially moving Schwarzschild black hole

Guansheng He, Wenbin Lin

摘要:

引力透镜的横向运动对光频移的运动学效应已作了详细的研究,而径向运动的影响被认为比横向运动的影响小得多,因而通常被忽略。在本工作中,我们发现当光发射器(或接收器)靠近引力透镜,且两者之间的距离为一个碰撞参量尺度时,径向速度对频移的影响与横向速度对频移的影响具有相同的数量级。由于引力透镜相对于光发射器或接收器的运动,显著的速度效应通常是瞬时的。

英文摘要:

The kinematical effect induced by the transversal motion of a gravitational lens on the frequency shift of light has been investigated in detail, while the effect of the radial motion is thought to be much smaller than the transversal one and thus has usually been neglected. In this work, we find that the radial velocity effect on the frequency shift has the same order of magnitude as that of the transversal velocity effect, when the light emitter (or the receiver) is close to the gravitational lens with the distance between them being an impact parameter scale. The significant velocity effect is usually transient due to the motion of the gravitational lens relative to the light emitter or the receiver.

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