Regression of non-linear coupling of noise in LIGO detectors

被引：5

作者：

Costa, C. F. Da Silva ^{[1
]}

Billman, C. ^{[1
]}

Effler, A. ^{[2
]}

Klimenko, S. ^{[1
]}

Cheng, H-P ^{[1
]}

机构：

[1] Univ Florida, Gainesville, FL 32611 USA

[2] LIGO Livingston Observ, Livingston, LA 70754 USA

来源：

CLASSICAL AND QUANTUM GRAVITY | 2018年 / 35卷 / 05期

关键词：

gravitational waves; instrumental noise; noise regression;

D O I：

10.1088/1361-6382/aaa536

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In 2015, after their upgrade, the advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors started acquiring data. The effort to improve their sensitivity has never stopped since then. The goal to achieve design sensitivity is challenging. Environmental and instrumental noise couple to the detector output with different, linear and non-linear, coupling mechanisms. The noise regression method we use is based on the Wiener-Kolmogorov filter, which uses witness channels to make noise predictions. We present here how this method helped to determine complex non-linear noise couplings in the output mode cleaner and in the mirror suspension system of the LIGO detector.

引用

页数：12

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