Gravitational Waves
Physicists at the University of California, Riverside have developed FROSTI, an innovative adaptive optics system that corrects mirror distortions in LIGO under high laser power. This breakthrough, detailed in Optica, paves the way for more sensitive gravitational-wave observatories. It promises to expand astronomers' view of the cosmos by detecting events 10 times farther away.
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Two black hole collisions detected in late 2024 have provided unprecedented tests of Einstein's general theory of relativity. The events, captured by the LIGO-Virgo-KAGRA Collaboration, revealed unusual spins and possible second-generation black holes. These detections confirm theoretical predictions with high precision and probe for new particles.