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The discovery of a hidden primordial black hole, which formed just 750 million years after the Big Bang, suggests that it may be the ‘tip of the iceberg’ of the cosmic monsters hiding in the early universe.
A rare supermassive black hole found hiding at the dawn of the universe could indicate that there were thousands more of the ravenous monsters stalking the early cosmos than scientists thought — and astronomers aren’t sure why.
The primordial black hole is around 1 billion times the mass of our sun and was found at the center of the galaxy COS-87259. The ancient galaxy formed just 750 million years after the Big Bang and was spotted by the Atacama Large Millimeter Array (ALMA), a radio observatory in Chile, in a tiny patch of sky less than 10 times the size of the full moon.
Obscured beneath a cloak of turbulent stardust, the rapidly growing black hole was seen consuming part of its accretion disc of orbiting matter while spewing the leftovers out in a jet traveling close to the speed of light. The monster black hole appears to be at a rare intermediate stage of growth, somewhere between a dusty, star-forming galaxy and an enormous, brightly glowing black hole called a quasar.
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An illustration of a quasar, which the new black hole is an early form of, blasting a jet of hot, radioactive wind into the cosmos. (Image credit: ESO/M. Kornmesser)
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