Correlated magnetic noise in global networks of gravitational-wave detectors: Observations and implications

被引：75
作者：
Thrane, E. [1 ]
Christensen, N. [2 ]
Schofield, R. M. S. [3 ]
机构：
[1] LIGO Calif Inst Technol, Pasadena, CA 91125 USA
[2] Carleton Coll, Northfield, MN 55057 USA
[3] Univ Oregon, Eugene, OR 97403 USA
来源：
PHYSICAL REVIEW D | 2013年 / 87卷 / 12期
基金：
美国国家科学基金会;
关键词：
RADIATION; IONOSPHERE;
D O I：
10.1103/PhysRevD.87.123009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
One of the most ambitious goals of gravitational-wave astronomy is to observe the stochastic gravitational-wave background. Correlated noise in two or more detectors can introduce a systematic error, which limits the sensitivity of stochastic searches. We report on measurements of correlated magnetic noise from Schumann resonances at the widely separated LIGO and Virgo detectors. We investigate the effect of this noise on a global network of gravitational-wave detectors and derive a constraint on the allowable coupling of environmental magnetic fields to test mass motion in gravitational-wave detectors. We find that while correlated noise from global electromagnetic fields could be safely ignored for initial LIGO stochastic searches, it could severely impact Advanced LIGO, Advanced Virgo, KAGRA, as well as third-generation detectors.
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页数：6
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