LIGO Caltech

11/21/2022 | Press release | Distributed by Public on 11/22/2022 06:04

Winner of the 2022 Award for Excellence in Detector Characterization and Calibration Announced

The LIGO Laboratory congratulates Matthew Ball of the University of Oregon for winning this year's LIGO Laboratory Award for Excellence in Detector Characterization and Calibration. Ball is recognized for his critical role in understanding correlated magnetic noise caused by distant lightning strikes, the only known environmental sources of correlated noise in the LIGO-Virgo-KAGRA gravitational wave detector network. Not only did Matthew conclusively establish the correlation between lightning strikes and magnetic-field sensors at LIGO's two detectors (in the US) as well as the Virgo detector (in Italy), he found that the frequency of these lightning-driven disturbances overlap with the most sensitive range of the LIGO and Virgo detectors.

Ball's findings have important implications for future gravitational-wave searches, including searches for mergers of distant black holes and neutron stars, which may be obscured by this noise. Ball's results are also critical for searches for stochastic gravitational waves, an ever-present source that we would find in all detectors, potentially from violent fluctuations in the early Universe or a steady background of quiet merger signals.

Ball and collaborators also found that lightning strikes induce electric currents in the detectors' metal beam tubes. This insight may provide important design guidelines for future detectors.

Matthew will receive a $1,000 prize and present an invited seminar at one of the LIGO Laboratory sites (LIGO-Hanford, LIGO-Livingston, Caltech, or MIT) to share his achievements with LIGO Laboratory members. He will also be presented with an award certificate at the next meeting of the LIGO-Virgo-KAGRA collaboration.

Find a list
of excellent LIGO Detector Characterization and Calibration projects that earned honorable mention for the 2022 award.
Read more
about the LIGO Laboratory Award for Excellence in Detector Characterization and Calibration.