Eliminating terrestrial noise sources to improve the LIGO gravity wave detectors

Eliminating terrestrial noise sources to improve the LIGO gravity wave detectors
Credit: Caltech/JPL/Art Center Data Visualization Summer Internship Program/LIGO Laboratory

In their search for gravitational waves—stretches in space-time produced by dramatically violent events in the distant universe—researchers at the Laser Interferometer Gravitational-Wave Observatory (LIGO) have created some of the most sensitive detectors in the world. Unfortunately, these detectors also pick up on lots of other disturbances—for example, strong winds or the sounds of a passing truck. Students from the Data Visualization Summer Internship program—operated by faculty members from Caltech, JPL, and Art Center College of Design—were tasked with determining if a blip on the detector is a gravitational wave or instead just a signal from ordinary bumps and shakes.

To do this, they developed these colorful visualizations to represent how signals are related to known events. The dial on the left marks the time at which each event was recorded; on the right, the height of the bars indicates the strength of each event while the lines connecting the bars indicate how strongly these events are correlated to one another. Coupled with the existing analytical methods used by LIGO, this new way of looking at things will help researchers identify and eliminate terrestrial noise sources, directly improving the astrophysical reach of the LIGO detectors—and making those elusive just that much easier to detect.

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Citation: Eliminating terrestrial noise sources to improve the LIGO gravity wave detectors (2015, June 8) retrieved 15 June 2019 from https://phys.org/news/2015-06-terrestrial-noise-sources-ligo-gravity.html
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Jun 08, 2015
Seems that gravity wave detection in this way rests on the assumption that gravity propagates independent of the underlying medium (math model). Instead, in SubQuantum Kinetics gravity is a property of the changing distortions in the underlying medium. Hence, gravity waves will accommodate the changing medium, and arrive at the detector from the two directions without phase distortion. Thus, LIGO will never work.

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