JWST's Red Dots Could Be Rapidly Growing Black Holes

Among the many surprises uncovered by the James Webb Space Telescope, one of the strangest has been a large population of tiny, intensely red objects known as Little Red Dots. Their true nature has remained unclear. Now, new simulations performed with Japan's ATERUI III supercomputer suggest these objects may be rapidly growing black holes that took advantage of conditions in the early Universe that no longer exist today.

The findings do not require unusual physics or highly unlikely events. Instead, the simulations indicate that Little Red Dots could arise naturally from the environment of the young cosmos, where black holes were able to grow at extraordinary rates.

The research was led by Sunmyon Chon of the Max Planck Institute for Astrophysics. The team used the ATERUI III supercomputer at the National Astronomical Observatory of Japan to carry out some of the most detailed cosmological simulations yet of the early Universe.