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Author: search.filters.author.Dhurandhar, SanjeevSubject: search.filters.subject.Optimal Sensitivity

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    Time delay interferometry and LISA optimal sensitivity
    (2011-07-05) Pai, A.; Nayak, K. R.; Dhurandhar, Sanjeev; et al.
    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.