LIGO Detector Characterization in the first half of the fourth Observing run

Abstract Progress in gravitational-wave (GW) astronomy depends upon having sensitive detectors with good data quality. Since the end of the Laser Interferometer Gravitational-Wave Observatory-Virgo-KAGRA third Observing run in March 2020, detector-characterization efforts have lead to increased sensitivity of the detectors, swifter validation of GW candidates and improved tools used for data-quality products. In this article, we discuss these efforts in detail and their impact on our ability to detect and study GWs. These include the multiple instrumental investigations that led to reduction in transient noise, along with the work to improve software tools used to examine the detectors data-quality. We end with a brief discussion on the role and requirements of detector characterization as the sensitivity of our detectors further improves in the future Observing runs.

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Journal
Classical and Quantum Gravity
Published
2025-03-24
DOI
https://doi.org/10.1088/1361-6382/adc4b6
Citations
23
Primary Topic
Pulsars and Gravitational Waves Research
Type
article
Field-Weighted Citation Impact
26.56

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LIGO Detector Characterization in the first half of the fourth Observing run

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article en
23 citations

Abstract

Abstract Progress in gravitational-wave (GW) astronomy depends upon having sensitive detectors with good data quality. Since the end of the Laser Interferometer Gravitational-Wave Observatory-Virgo-KAGRA third Observing run in March 2020, detector-characterization efforts have lead to increased sensitivity of the detectors, swifter validation of GW candidates and improved tools used for data-quality products. In this article, we discuss these efforts in detail and their impact on our ability to detect and study GWs. These include the multiple instrumental investigations that led to reduction in transient noise, along with the work to improve software tools used to examine the detectors data-quality. We end with a brief discussion on the role and requirements of detector characterization as the sensitivity of our detectors further improves in the future Observing runs.

Classical and Quantum GravityVol. 42(8)
Observatoire de la Côte d’Azur (FR), Institute of Nuclear Physics of Lyon (FR), Institut de Physique des 2 Infinis de Lyon (FR)
National Science Foundation, Massachusetts Institute of Technology, California Institute of Technology
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Openalex Percentile: Top 0%
Pulsars and Gravitational Waves Research
26.56
DOIOpen Access PDFOpenAlex
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