Blip glitches in Advanced LIGO data

Miriam Cabero, Andrew Lundgren, Alex H. Nitz, Thomas Dent, David Barker, Evan Goetz, Jeff S. Kissel, Laura K. Nuttall, Paul Schale, Robert Schofield, Derek Davis

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Blip glitches are short noise transients present in data from ground-based gravitational-wave observatories. These glitches resemble the gravitational-wave signature of massive binary black hole mergers. Hence, the sensitivity of transient gravitational-wave searches to such high-mass systems and other potential short duration sources is degraded by the presence of blip glitches. The origin and rate of occurrence of this type of glitch have been largely unknown. In this paper we explore the population of blip glitches in Advanced LIGO during its first and second observing runs. On average, we find that Advanced LIGO data contains approximately two blip glitches per hour of data. We identify four subsets of blip glitches correlated with detector auxiliary or environmental sensor channels, however the physical causes of the majority of blips remain unclear.
Original languageEnglish
Article number155010
JournalClassical and Quantum Gravity
Issue number15
Publication statusPublished - 17 Jul 2019


  • physics.ins-det


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