Displacement- and Timing-Noise Free Gravitational-Wave Detection

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

2005-04-22

arxiv.org/abs/gr-qc/0504108v3

Phys.Rev.Lett. 96 (2006) 231102

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 3 figures; mistake corrected

Scientific paper

10.1103/PhysRevLett.96.231102

Motivated by a recently-invented scheme of displacement-noise-free gravitational-wave detection, we demonstrate the existence of gravitational-wave detection schemes insusceptible to both displacement and timing (laser) noises, and are thus realizable by shot-noise-limited laser interferometry. This is possible due to two reasons: first, gravitational waves and displacement disturbances contribute to light propagation times in different manners; second, for an N-detector system, the number of signal channels is of the order O(N^2), while the total number of timing- and displacement-noise channels is of the order O(N).

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