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

Autor: 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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Zdroj: Classical & Quantum Gravity; 11/17/2016, Vol. 33 Issue 22, p1-1, 1p
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index