Expanding catalog of black hole collisions is rewriting the history of the universe

Expanding catalog of black hole collisions is rewriting the history of the universe

Between May 2023 and January 2024, a global network of gravitational-wave detectors picked up 128 new cosmic signals, more than doubling the entire catalog built across the previous decade. The universe, it turns out, is not quiet. It is constantly shaking. The LIGO-Virgo-KAGRA Collaboration, an international partnership spanning observatories in the United States, Italy, and Japan, has published its fourth gravitational-wave catalog, GWTC-4.0, …

Causality, Ensemble Invariance, and Black-Hole Phenomenology: Prof. Dr. İzzet Sakallı on the KSS Bound, Thermodynamic Topology, Hawking Radiation, and Quasinormal Modes (4)

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