2017
DOI: 10.1103/physrevd.95.062003
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Calibration of the Advanced LIGO detectors for the discovery of the binary black-hole merger GW150914

Abstract: In Advanced LIGO, detection and astrophysical source parameter estimation of the binary black hole merger GW150914 requires a calibrated estimate of the gravitational-wave strain sensed by the detectors. Producing an estimate from each detector's differential arm length control loop readout signals requires applying time domain filters, which are designed from a frequency domain model of the detector's gravitational-wave response. The gravitational-wave response model is determined by the detector's optomechan… Show more

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Cited by 98 publications
(125 citation statements)
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“…Errors introduced by mismatches between template waveforms and signals [51] are expected to introduce a similar effect in all detectors, and therefore the effect on the time difference, and localization, is likely to be negligible. On the other hand, errors in the calibration of GW detectors [137] will be uncorrelated, and these errors can significantly impact localization. For instance, roughly one third of the localization error budget for GW150914 was due to strain calibration uncertainty [9,137].…”
Section: Discussionmentioning
confidence: 99%
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“…Errors introduced by mismatches between template waveforms and signals [51] are expected to introduce a similar effect in all detectors, and therefore the effect on the time difference, and localization, is likely to be negligible. On the other hand, errors in the calibration of GW detectors [137] will be uncorrelated, and these errors can significantly impact localization. For instance, roughly one third of the localization error budget for GW150914 was due to strain calibration uncertainty [9,137].…”
Section: Discussionmentioning
confidence: 99%
“…On the other hand, errors in the calibration of GW detectors [137] will be uncorrelated, and these errors can significantly impact localization. For instance, roughly one third of the localization error budget for GW150914 was due to strain calibration uncertainty [9,137]. At high SNR, calibration errors are expected to dominate the overall error budget for localization [51].…”
Section: Discussionmentioning
confidence: 99%
“…Accurately reconstructing the gravitational wave signals requires precise and accurate calibration of the responses of the detectors to variations in the relative lengths of the 4-km-long interferometer arms. 4 Extracting the parameters of the events that generated the waves also imposes stringent requirements on detector calibration. 5 The estimated required calibration accuracy for LIGO's initial detection phase was on the order of 5 %, while the requirements for making precision measurements of source parameters are on the order of 0.5 %.…”
Section: Introductionmentioning
confidence: 99%
“…The results of measurement like these are used to model the response of the interferometer to gravitational waves. 4 …”
mentioning
confidence: 99%
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