¶ Helix
Description:
Helix glitches look like a vortex, or helical structure, that span a wide range of frequencies.
A category of glitches identified through Gravity Spy that looks like the icon above, like a vortex from the side, or a helical structure. They appeared during the first observing run (O1) of Advanced LIGO.
It is likely that these glitches were related to glitches in auxiliary lasers (called photon calibrators) that are used to push the LIGO mirrors by known amounts to calibrate our detectors. These lasers occasionally malfunctioned, causing Helix glitches.
Cause:
Auxiliary lasers used to push mirrors and calibrate detectors.
Status:
Extinct.
Examples:
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Audio Example:
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More Information: