¶ Helix
A category of glitches identified through Gravity Spy that looks like the icon above, like a vortex from the side, or a helical structure. It is possible that these were related to glitches in auxiliary lasers (called photon calibrators) that we use to push the LIGO mirrors by known amounts, to calibrate our detectors. These lasers occasionally malfunctioned. For more information, see: https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=21463
¶ Examples
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Audio of Helix (with associated spectrogram) Make sure to wear good headphones!
