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

被引：38

作者：

Coughlin, Michael W. ^{[1
]}

Christensen, Nelson L. ^{[2
]}

De Rosa, Rosario ^{[3
,4
]}

Fiori, Irene ^{[5
]}

Golkowski, Mark ^{[6
]}

Guidry, Melissa ^{[7
]}

Harms, Jan ^{[8
]}

Kubisz, Jerzy ^{[9
]}

Kulak, Andrzej ^{[10
]}

Mlynarczyk, Janusz

Paoletti, Federico ^{[11
]}

Thrane, Eric ^{[12
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Carleton Coll, Phys & Astron, Northfield, MN 55057 USA

[3] Complesso Univ Monte S Angelo, Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy

[4] Univ Naples Federico II, Complesso Univ Monte S Angelo, I-80126 Naples, Italy

[5] EGO, I-56021 Pisa, Italy

[6] Univ Colorado, Dept Elect Engn, Denver, CO 80204 USA

[7] Coll William & Mary, Dept Phys, Williamsburg, VA 23185 USA

[8] Ist Nazl Fis Nucl, Sez Firenze, I-50019 Sesto Fiorentino, Italy

[9] Jagiellonian Univ, Astron Observ, Krakow, Poland

[10] AGH Univ Sci & Technol, Dept Elect, Krakow, Poland

[11] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy

[12] Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia

来源：

CLASSICAL AND QUANTUM GRAVITY | 2016年 / 33卷 / 22期

基金：

美国国家科学基金会;

关键词：

Schumann resonances; correlated noise; Wiener filter;

D O I：

10.1088/0264-9381/33/22/224003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：1 / 13

页数：13