Simulations suggest Webb's little red dots are rapidly growing black holes
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New simulations using Japan's ATERUI III supercomputer indicate that the mysterious little red dots observed by the James Webb Space Telescope may be rapidly growing black holes. The findings suggest intense ultraviolet radiation in the early universe suppressed small star formation, causing gas to collapse into a single massive star that left behind a black hole seed. A dense gas disk around the black hole may have trapped radiation, allowing growth far faster than in the modern universe.
Key Facts
- Simulations on Japan's ATERUI III supercomputer show little red dots may be rapidly growing black holes.
- Intense ultraviolet radiation in the early universe may have suppressed small star formation, causing gas to gather around a single giant star.
- The collapse of the giant star left behind a black hole seed surrounded by a dense gas disk.
- The gas disk may have trapped radiation, allowing the black hole to grow much faster than in the modern universe.
- Properties of simulated black holes largely match James Webb's observed Little Red Dots.
Simulation Findings
New simulations using Japan's ATERUI III supercomputer indicate that the mysterious little red dots observed by the James Webb Space Telescope may be rapidly growing black holes. The research suggests that intense ultraviolet radiation in the early universe prevented the formation of many small stars, causing gas to collect around a single giant star. When this giant star collapsed, it left behind a black hole seed. A dense gas disk formed around the black hole, trapping radiation and enabling growth far faster than in the modern universe.
Comparison with Observations
The properties of black holes produced in the simulations largely overlap with the Little Red Dots observed by James Webb. This overlap supports the hypothesis that the Little Red Dots are rapidly growing black holes in the early universe.
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