¶ Pizzicato
Description:
Pizzicato is a short (~0.05 s), flying-saucer-shaped high energy burst centered around either 500 Hz, 1000 Hz, or in rare cases, both. These glitches usually have a small hole in their centers, and will sometimes also have a “tractor beam” below them - much like a UFO beaming up a cow! Similar looking glitches resembling very loud versions of Pizzicato have been categorized in the past as
Church.
Pizzicato is a glitch that started being observed prior to the third observing run (O3) at both the LIGO Hanford and LIGO Livingston detectors, although the majority of these glitches occur at the LIGO Livingston detector.
We are not exactly sure what causes these glitches, but because of the frequency they occur at, we are confident that they are related to the violin modes (vibrations of the fibers used to suspend our test masses) or our violin mode damping mechanisms.
Cause:
Likely related to vibrations of fibers used to suspend test masses.
Status:
Active.
Examples:
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Audio Example:
Not currently available
More Information:
- Pizzicato was originally proposed by @EcceruElme, and aided by @ZngabitanT, @loj9634, @vgbara, @niftyfingers, and @Caspastro.