A small but powerful black hole was found in the early Universe
In short: Astronomers using the James Webb Space Telescope observed a luminous galaxy from the early Universe, GN-z11, and discovered it hosts a rapidly growing black hole. By analyzing the galaxy's spectrum, the team identified specific chemical signatures and gas densities typical of active galactic nuclei. They found that this black hole is accreting matter at a very high rate, significantly contributing to the galaxy's intense brightness.
The discovery helps explain how supermassive black holes grew so quickly after the Big Bang. The study used the JWST-NIRSpec instrument to detect specific spectral lines and a blueshifted absorption trough, which indicates gas being pushed outward by the black hole's activity.
The researchers estimated the black hole's mass using local virial relations, but the study is limited by the fact that these relations may not perfectly apply to such extreme, early environments.
Why it matters: Finding active black holes in the early Universe helps scientists understand how the universe's largest structures formed so quickly.
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Sources
- Source: Research: Maiolino et al. (2024). A small and vigorous black hole in the early Universe. Nature. · cc-by
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