Black Hole Merger Detection

On 15th July 2025, the LVK global network of observatories (LIGO–Virgo–KAGRA) announced the detection of GW231123, the merger of the two biggest black holes ever observed in such an event.

Why is this discovery significant?

  • Breaks Previous Records: This merger created a black hole 225 times the mass of the Sun — far larger than any detected via gravitational waves.
  • Challenges Current Theories: Black holes between 100–150 solar masses are believed not to form from regular stellar collapse. Their presence indicates a new or poorly understood formation mechanism.
  • Hints at Hierarchical Mergers: Scientists believe this black hole might be the result of ....
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