Effects of transients in LIGO suspensions on searches for gravitational waves

Abstract

This paper presents an analysis of the transient behavior of the Advanced LIGO suspensions used to seismically isolate the optics. We have characterized the transients in the longitudinal motion of the quadruple suspensions during Advanced LIGO's first observing run. Propagation of transients between stages is consistent with modelled transfer functions, such that transient motion originating at the top of the suspension chain is significantly reduced in amplitude at the test mass. We find that there are transients seen by the longitudinal motion monitors of quadruple suspensions, but they are not significantly correlated with transient motion above the noise floor in the gravitational wave strain data, and therefore do not present a dominant source of background noise in the searches for transient gravitational wave signals.

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Cited by in corpus (5)

• All-sky search for long-duration gravitational-wave transients in the second Advanced LIGO observing run
• All-sky search for long-duration gravitational wave transients in the first Advanced LIGO observing run
• Detecting and Diagnosing Terrestrial Gravitational-Wave Mimics Through Feature Learning
• Sensing and vetoing loud transient noises for the gravitational-wave detection
• Multi-detector null-stream-based ${\chi }^2$ statistic for compact binary coalescence searches