LIGO detects gravitational signal that validates Stephen Hawking’s 1971 prediction
Researchers from the LIGO-Virgo-KAGRA consortium detected the gravitational signal GW250114. The event occurred in 2025 and involved the merger of two black holes. The observation confirmed the area theorem proposed by Stephen Hawking in 1971.
The collision happened more than a billion light years from Earth. The initial black holes had masses between 30 and 35 times that of the Sun. The result was a single black hole with 63 solar masses.
Characteristics of the cosmic event
The final black hole rotates at 100 rotations per second.
Scientists have accurately calculated the area of the event horizon.
The total area increased in relation to the sum of the original areas.
This directly validates Hawking’s prediction.
Area theorem in detail
Hawking formulated the idea in 1971.
The event horizon never shrinks after mergers.
Observation brings general relativity and quantum mechanics closer together.
- Black holes described by mass and rotation, according to Roy Kerr.
- Kerr’s prediction also confirmed in the data.
- Upgrades to detectors have allowed accurate measurements.
Technological advances in detectors
LIGO, Virgo and KAGRA detectors have received recent improvements.
They increased sensitivity to distant signals.
GW250114 is the clearest recorded so far.
More than 300 gravitational signals have been detected since 2015.
Confirmation of fundamental parameters
Astrophysicists have measured mass and rotation with high precision.
The resulting black hole follows only these two parameters.
This reinforces the simplified description of black holes.
Maximilian Isi highlighted the clarity of the observation.
Publication and milestone
The results were published in Physical Review Letters.
The detection coincides with 10 years since the first gravitational wave.
Signal GW250114 represents progress in gravitational astronomy.
Data opens the way for studies of extreme black holes.
Experimental validation reinforces established theories.
Mergers like this occur in distant galaxies.
Future observations will test limits of general relativity on quantum scales.
Scientists plan further analysis of the GW250114 signal to extract additional details about the collision dynamics and spacetime properties.
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