Calibration of Advanced Virgo and reconstruction of detector strain h(t) during the Observing Run O3

Abstract

The three Advanced Virgo and LIGO gravitational wave detectors participated to the third observing run (O3) between 1 April 2019 15:00 UTC and 27 March 2020 17:00 UTC,leading to several gravitational wave detections per month. This paper describes the Advanced Virgo detector calibration and the reconstruction of the detector strain $h(t)$ during O3, as well as the estimation of the associated uncertainties. For the first time, the photon calibration technique as been used as reference for Virgo calibration, which allowed to cross-calibrate the strain amplitude of the Virgo and LIGO detectors. The previous reference, so-called free swinging Michelson technique, has still been used but as an independent cross-check. $h(t)$ reconstruction and noise subtraction were processed online, with good enough quality to prevent the need for offline reprocessing, except for the two last weeks of September 2019. The uncertainties for the reconstructed $h(t)$ strain, estimated in this paper in a 20-2000~Hz frequency band, are frequency independent: 5% in amplitude, 35 mrad in phase and 10 $\mu$s in timing, with the exception of larger uncertainties around 50 Hz.

arXiv comment50 pages, 30 figures. Submitted to Class. and Quantum Grav.. Includes revision after referee's comments (resubmitted Nov. 2021)

References in corpus (22)

• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Advanced LIGO
• GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
• Sensitivity and Performance of the Advanced LIGO Detectors in the Third Observing Run
• Characterization of systematic error in Advanced LIGO calibration
• Machine-learning non-stationary noise out of gravitational wave detectors
• Improving the Sensitivity of Advanced LIGO Using Noise Subtraction
• Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO
• Calibration and sensitivity of the Virgo detector during its second science run
• Reconstructing the calibrated strain signal in the Advanced LIGO detectors
• The Advanced LIGO Photon Calibrators
• High-frequency corrections to the detector response and their effect on searches for gravitational waves
• Calibration of Advanced Virgo and Reconstruction of the Gravitational Wave Signal h(t) during the Observing Run O2
• physiCal: A physical approach to the marginalization of LIGO calibration uncertainties
• Optimal Calibration Accuracy for Gravitational Wave Detectors
• Fiducial displacements with improved accuracy for the global network of gravitational wave detectors
• The Advanced Virgo Photon Calibrators
• First Tests of a Newtonian Calibrator on an Interferometric Gravitational Wave Detector
• End benches scattered light modeling and subtraction in Advanced Virgo
• Improving the absolute accuracy of the gravitational wave detectors by combining the photon pressure and gravity field calibrators
• Newtonian calibrator tests during the Virgo O3 data taking
• Reconstruction of the gravitational wave signal $h(t)$ during the Virgo science runs and independent validation with a photon calibrator

Cited by in corpus (2)

• GWTC-2.1: Deep Extended Catalog of Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
• Sensors and Actuators for the Advanced LIGO+ Upgrade