astronomical community, as it challenges existing theories regarding black hole formation and evolution. This unprecedented event involved two massive black holes, one with a mass approximately 137 times that of the Sun and the other about 103 solar masses, merging to create a new black hole exceeding 225 solar masses . The implications of this discovery are profound, as they question the current models that predict stellar evolution and black hole formation.
LIGO Collaboration announced the detection of the most colossal black hole merger known to date, the final product of which appears to be a gigantic black hole more than 225 times the mass of the Sun. Much about this signal, designated GW231123, contradicts known models for stellar evolution, sending physicists scrambling to apprehend how such a merger was even possible.
LIGO, or the Laser Interferometer Gravitational-wave Observatory, made physics history in 2015 by detecting gravitational waves for the first time, capturing the cosmological echo of two colliding black holes. Since its Nobel-winning discovery, the LIGO Collaboration, an international partnership between LIGO and Virgo and KAGRA in Italy and Japan, respectively, has continued its meticulous surveillance of the galaxy. The collaboration has detected numerous signals from neutron stars, supernovas, and some 300 black hole mergers.
LIGO, the Laser Interferometer Gravitational-wave Observatory, made history in 2015 when it made the first-ever direct detection of gravitational waves, ripples in space-time. In that case, the waves emanated from a black hole merger that resulted in a final black hole 62 times the mass of our sun. The signal was detected jointly by the twin detectors of LIGO, one located in Livingston, Louisiana, and the other in Hanford, Washington.
KAGRA (Kamioka Gravitational Wave Detector) in Japan to form the LVK Collaboration. These detectors have collectively observed more than 200 black hole mergers in their fourth run, and about 300 in total since the start of the first run in 2015.
Scientists have detected about 300 black hole mergers from the gravitational waves they generate. Until now, the most massive merger known produced a black hole about 140 times the mass of the sun. The latest merger produced a black hole up to 265 times more massive than the sun. Details are to be presented on Monday at the GR-Amaldi meeting in Glasgow.
Before the first gravitational wave detectors were built in the 1990s, scientists could observe the universe only through electromagnetic radiation such as visible light, infrared and radio waves. Gravitational wave observatories provide a new view of the cosmos, allowing researchers to see events that were otherwise hidden from them.
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