Scientists detect biggest black hole merger as predicted by Einstein
This collision is more massive than a hundred suns!
Space might be the final frontier (for now), but it is also one of the most fascinating.
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One of the most interesting and mind-boggling phenomena that occurs in the universe is black holes.
We might not ever know everything there is to know about black holes.
So what would happen if two of them collided?
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A team of astronomers discovered an event, dubbed GW231123, when the Laser Interferometer Gravitational-Wave Observatory (LIGO) detected faint ripples in space-time being produced by two black holes slamming into each other.
Let's break it down.
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What are black holes?
These cosmic objects, or regions of space, are believed to be formed when a giant star reaches the end of its life and collapses.
The black hole that is left in its place is made of a large concentration of matter packed into a tiny space.
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The amount of mass packed into this small space creates an enormously strong gravitational pull that will not let anything, including light, escape it.
If there is no light, it is a black hole.
How is Albert Einstein involved?
Physicists now call such ripples as produced by the newly discovered collision of these two black holes 'gravitational waves'.
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As part of his theory of relativity, Albert Einstein predicted the existence of gravitational waves in 1915; however, he thought they were too weak to ever be detected by human technology.
In 2016, LIGO detected gravitational waves for the first time when black holes collided.
Since then, LIGO and its sister instruments, Virgo in Italy, and KAGRA in Japan, have picked up hundreds of black hole mergers.
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What makes the most recent one so special is that it is the largest merger ever recorded.
The individual black holes are special because they lie in a range of masses where we do not expect them to be produced from dying stars. As if this wasn’t enough, the black holes are also likely spinning almost as fast as physically possible. GW231123 presents a real challenge to our understanding of black hole formation.
There is still some uncertainty surrounding how far away GW231123 is from Earth, but it is estimated to be up to 12 billion light-years away.
The mass of the two black holes is approximately 100 and 140 times the mass of the Sun, and they have come together to form a black hole over 265 times the mass of the Sun.
According to Al Jazeera, the collision was recorded in November 2023, and the scientific findings were presented at this year’s International Conference on General Relativity and Gravitation in Glasgow, United Kingdom.
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