After Three Years of Upgrades, LIGO is Fully Operational Again By Nancy_A
Making LIGO even stronger is that it will be joined by two other gravitational wave facilities, Europe’s Virgo instrument and the new Japanese Kamioka Gravitational Wave Detector, or KAGRA.
LIGO has two detectors, one located in Hanfrod, Washington, and the other in Livingston, Louisiana. Each detector consists of two concrete pipes that are joined at the base and extend perpendicular to each other for about 4 km . Inside the pipelines, two powerful laser beams that are bounced off a series of mirrors can measure the length of each arm with extreme precision.
“My teammates and I are data scientists in the LIGO collaboration, and we have been working on a number of different upgrades to software used to process LIGO data and the algorithms that recognize signs of gravitational waves in that data,” Hanna wrote. “These algorithms function by searching for patterns that match theoretical models of millions of possible black hole and neutron star merger events.
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