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Challenging the theory of star evolution
A recent gravitational wave event, GW 231123, has presented a significant challenge to current understanding of black hole formation, according to mark Hannam, a physicist and astronomer from Cardiff University, England.
“This black hole is the most massive double black hole we have ever observed through gravitational waves. This event is a challenge for understanding the formation of black holes,” Hannam stated, as quoted by Science Alert on Wednesday, July 16, 2025.
Hannam further explained that the mass of this particular black hole cannot be accounted for by the standard stellar evolution model. One potential clarification,he suggested,is that the two black holes in this binary system may have formed from the merger of smaller black holes prior to the observed event.
Gravitational wave analysis allows astronomers to study the properties of black holes involved in such mergers. This method is crucial as black holes are inherently small and difficult to observe directly in space. By examining data from these black hole mergers, scientists gain insights into the existence and characteristics of these objects, which were previously understood primarily through theoretical frameworks.
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Bigger than the mass of the black hole mass
Typically, smaller mass black holes are the remnants of massive stars that have undergone supernova explosions. The core of such a star collapses under its own gravity,becoming incredibly dense,to the point where not even light can escape its gravitational pull.