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arXiv · 1606.01011

Subtraction of correlated noise in global networks of gravitational-wave interferometers

Michael W. Coughlin·Nelson L. Christensen·Rosario De Rosa·Irene Fiori·Mark Gołkowski·Melissa Guidry·Jan Harms·Jerzy Kubisz·Andrzej Kulak·Janusz Mlynarczyk·Federico Paoletti·Eric Thrane
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Abstract

The recent discovery of merging black holes suggests that a stochastic gravitational-wave background is within reach of the advanced detector network operating at design sensitivity. However, correlated magnetic noise from Schumann resonances threatens to contaminate observation of a stochastic background. In this paper, we report on the first effort to eliminate intercontinental correlated noise from Schumann resonances using Wiener filtering. Using magnetometers as proxies for gravitational-wave detectors, we demonstrate as much as a factor of two reduction in the coherence between magnetometers on different continents. While much work remains to be done, our results constitute a proof-of-principle and motivate follow-up studies with a dedicated array of magnetometers.

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BibTeXRIS

Michael W. Coughlin, Nelson L. Christensen, Rosario De Rosa, Irene Fiori, Mark Gołkowski, Melissa Guidry, Jan Harms, Jerzy Kubisz, Andrzej Kulak, Janusz Mlynarczyk, Federico Paoletti, Eric Thrane. 2016-06-03. Subtraction of correlated noise in global networks of gravitational-wave interferometers. https://doi.org/10.1088/0264-9381%2F33%2F22%2F224003

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