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Calibration of advanced Virgo and reconstruction of the gravitational wave signal h(t) during the observing run O2

Acernese, F. and Urban, A. L. (2018) Calibration of advanced Virgo and reconstruction of the gravitational wave signal h(t) during the observing run O2. Classical and Quantum Gravity, 35 (20). Art. No. 205004. ISSN 0264-9381. doi:10.1088/1361-6382/aadf1a.

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In August 2017, advanced Virgo joined advanced LIGO for the end of the O2 run, leading to the first gravitational waves detections with the three-detector network. This paper describes the advanced Virgo calibration and the gravitational wave strain h(t) reconstruction during O2. The methods are the same as the ones developed for the initial Virgo detector and have already been described in previous publications; this paper summarizes the differences and emphasis is put on estimating systematic uncertainties. Three versions of the h(t) signal have been computed for the Virgo O2 run, an online version and two post-run reprocessed versions with improved detector calibration and reconstruction algorithm. A photon calibrator has been used to establish the sign of h(t) and to make an independent partial cross-check of the systematic uncertainties. The uncertainties reached for the latest h(t) version are 5.1% in amplitude, 40 mrad in phase and 20 μs in timing.

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Additional Information:© 2018 IOP Publishing Ltd. Received 11 July 2018; Accepted 5 September 2018; Accepted Manuscript online 5 September 2018; Published 26 September 2018. The authors gratefully acknowledge the Italian Istituto Nazionale di Fisica Nucleare (INFN), the French Centre National de la Recherche Scientifique (CNRS) and the Foundation for Fundamental Research on Matter supported by the Netherlands Organisation for Scientific Research, for the construction and operation of the Virgo detector and the creation and support of the EGO consortium.
Funding AgencyGrant Number
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Issue or Number:20
Record Number:CaltechAUTHORS:20180926-084608554
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Official Citation:F Acernese et al 2018 Class. Quantum Grav. 35 205004
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89949
Deposited By: Tony Diaz
Deposited On:26 Sep 2018 17:30
Last Modified:12 Jul 2022 19:41

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