Journal article
J. Harms, R. DeSalvo, S. Dorsher, V. Mandic
2009
2009
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ArXiv
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APA
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Harms, J., DeSalvo, R., Dorsher, S., & Mandic, V. (2009). Gravity-Gradient Subtraction in 3rd Generation Underground Gravitational-Wave Detectors in Homogeneous Media.
Chicago/Turabian
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Harms, J., R. DeSalvo, S. Dorsher, and V. Mandic. “Gravity-Gradient Subtraction in 3rd Generation Underground Gravitational-Wave Detectors in Homogeneous Media” (2009).
MLA
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Harms, J., et al. Gravity-Gradient Subtraction in 3rd Generation Underground Gravitational-Wave Detectors in Homogeneous Media. 2009.
BibTeX Click to copy
@article{j2009a,
title = {Gravity-Gradient Subtraction in 3rd Generation Underground Gravitational-Wave Detectors in Homogeneous Media},
year = {2009},
author = {Harms, J. and DeSalvo, R. and Dorsher, S. and Mandic, V.}
}
Abstract
In this paper, we develop a new approach to gravity-gradient noise subtraction for underground gravitational-wave detectors in homogeneous rock. The method is based on spatial harmonic expansions of seismic fields. It is shown that gravity-gradient noise pr oduced by seismic fields from distant sources, stationary or non-stationary, can be calculated from seismic data measured locally at the test mass. Furthermore, the formula is applied to seismic fields from stationar y local sources. It is found that gravity gradients from these fields can be subtracted using local seismic measu rements. The results are confirmed numerically with a finite-element simulation. A new seismic-array design is proposed that provides the additional information about the seismic field required to ensure appli cability of the approach to realistic scenarios even with inhomogeneous rock and non-stationary local sources.
