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Validating gravitational-wave detections: The advanced LIGO hardware injection system

Biwer, C., Barker, D., Batch, J. C., Betzwieser, J., Fisher, R. P., Goetz, E., Kandhasamy, S., Karki, S., Kissel, J. S., Lundgren, A. P., Macleod, D. M., Mullavey, A., Riles, K., Rollins, J. G., Thorne, K. A., Thrane, E., Abbott, T. D., Allen, B., Brown, D. A., Charlton, P., Crowder, S. G., Fritschel, P., Kanner, J. B., Landry, M., Lazzaro, C., Millhouse, M., Pitkin, M., Savage, R. L., Shawhan, P., Shoemaker, D. H., Smith, J. R., Sun, L., Veitch, J., Vitale, S., Weinstein, A. J., Cornish, N., Essick, R. C., Fays, M., Katsavounidis, E., Lange, J., Littenberg, T. B., Lynch, R., Meyers, P. M., Pannarale, F., Prix, R., O'Shaughnessy, R. and Sigg, D. 2017. Validating gravitational-wave detections: The advanced LIGO hardware injection system. Physical Review D 95 (6) , 062002. 10.1103/PhysRevD.95.062002

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Hardware injections are simulated gravitational-wave signals added to the Laser Interferometer Gravitational-wave Observatory (LIGO). The detectors' test masses are physically displaced by an actuator in order to simulate the effects of a gravitational wave. The simulated signal initiates a control-system response which mimics that of a true gravitational wave. This provides an end-toend test of LIGO's ability to observe gravitational waves. The gravitational-wave analyses used to detect and characterize signals are exercised with hardware injections. By looking for discrepancies between the injected and recovered signals, we are able to characterize the performance of analyses and the coupling of instrumental subsystems to the detectors' output channels. This paper describes the hardware injection system and the recovery of injected signals representing binary black hole mergers, a stochastic gravitational wave background, spinning neutron stars, and sine-Gaussians.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: American Physical Society
ISSN: 2470-0010
Funders: STFC
Date of First Compliant Deposit: 5 June 2017
Date of Acceptance: 24 February 2017
Last Modified: 17 Nov 2023 17:02

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