Scientists at Durham University have discovered an ultramassive black hole around 33 billion times the mass of the Sun.
The gargantuan black hole, which is somewhere in space, is said to be one of the biggest ever found. The team described its findings, which were published in the journal Monthly Notices of the Royal Astronomical Society as "extremely exciting".
Dr James Nightingale of the Department of Physics at Durham University and lead author of the paper said: "This particular black hole, which is roughly 30 billion times the mass of our Sun, is one of the biggest ever detected and on the upper limit of how large we believe black holes can theoretically become, so it is an extremely exciting discovery.
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Ultramassive black holes are the most massive objects in the universe at between 10 billion and 40 billion times the mass of the sun. Astronomers believe they can be found at the centre of all large galaxies such as the Milky Way.
The origins of the rare and elusive ultramassive black holes are unclear, with some believing that they were formed from the extreme merger of massive galaxies billions of years ago when the universe was still young. The researchers used a phenomenon where they converted a nearby galaxy into a giant magnifying glass.
This revealed the ultramassive black hole's presence, a region where gravity is so powerful that even light cannot escape. The scientists used supercomputer simulations at Durham University and images captured by the Hubble Space Telescope to confirm the size of the supermassive black hole.
It is said to be the first black hole found using gravitational lensing. However, Dr Nightingale believes that the technique will allow scientists to find many more beyond our immediate universe.
He continued: "Most of the biggest black holes that we know about are in an active state, where matter pulled in close to the black hole heats up and releases energy in the form of light, X-rays and other radiation.
“However, gravitational lensing makes it possible to study inactive black holes, something not currently possible in distant galaxies. This approach could let us detect many more black holes beyond our local universe and reveal how these exotic objects evolved further back in cosmic time."
Researchers said that their work opens up the "tantalising possibility" that astronomers can discover more ultramassive black holes than previously thought. The research was supported by the UK Space Agency, the Royal Society, the Science and Technology Facilities Council, part of UK Research and Innovation and the European Research Council.
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