Displacement-Noise-Free Gravitational-Wave Detection

Details Displacement-Noise-Free Gravitational-Wave Detection Displacement-Noise-Free Gravitational-Wave Detection

2004-05-18

arxiv.org/abs/gr-qc/0405093v2

Phys.Rev.Lett. 93 (2004) 211103

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.93.211103

We present a new idea that allows us to detect gravitational waves without being disturbed by any kind of displacement noise, based on the fact that gravitational waves and test-mass motions affect the propagations of light differently. We demonstrate this idea by analyzing a simple toy model consisting three equally-separated objects on a line. By taking a certain combination of light travel times between these objects, we construct an observable free from the displacement of each object which has a reasonable sensitivity to gravitational waves.

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