Time Delay Interferometry and LISA Optimal Sensitivity

Details Time Delay Interferometry and LISA Optimal Sensitivity Time Delay Interferometry and LISA Optimal Sensitivity

2003-06-13

arxiv.org/abs/gr-qc/0306057v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX, 6 pages, 4 figures, To appear in Proceedings of XXXVIIIth Recontres de Moriond: Gravitational Waves and Experimental Gr

Scientific paper

The sensitivity of LISA depends on the suppression of several noise sources; dominant one is laser frequency noise. It has been shown that the six Doppler data streams obtained from three space-crafts can be appropriately time delayed and optimally combined to cancel this laser frequency noise. We show that the optimal data combinations when operated in a network mode improves the sensitivity over Michelson ranging from 40 % to 100 %. In this article, we summarize these results. We further show that the residual laser noise in the optimal data combination due to typical arm-length inaccuracy of 200 m is much below the level of optical path and the proof mass noises.

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