Method for environmental noise estimation via injection tests for ground-based gravitational wave detectors. (7th May 2021)

• Record Type: Journal Article
• Authors: Washimi, T; Yokozawa, T; Tanaka, T; Itoh, Y; Kume, J; Yokoyama, J
• Is Part Of: Classical and quantum gravity. Volume 38:Number 12(2021)
• Publication Date: 2021-05-07
• Subjects: gravitational wave -- physical environmental monitoring -- acoustic noise -- PEM injection -- KAGRA; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/1361-6382/abf89a
• Languages: English
• ISSNs: 0264-9381

Abstract

Abstract: Environmental noise is one of the critical issues for the observation of gravitational waves, but is difficult to predict in advance. Therefore, to evaluate the adverse impact of environmental noise on the detector sensitivity, understanding the detector response to the environmental noise in actual setup is crucial, for both the observation and future upgrades. In this paper, we introduce and verify a new method of the environmental noise injection test based on the post-observation commissioning of KAGRA. This new method (response function model) includes the frequency conversion and nonlinearity of power, which are the effects that are not considered in the current model (coupling function model) used in LIGO and Virgo. We also confirmed the validity of our method by applying it to an environmental noise-enriched dataset and successfully reproducing them.