This small population of primordial black holes could be transformative. Researchers found that even a tiny fraction of these early black holes, if situated in dense regions of matter, could rapidly accrete material and grow to supermassive proportions within 100 million years. This timeline aligns with the epochs when JWST observed these massive black holes.
In this model, supermassive black holes—potentially including the one at the center of the Milky Way—would not emerge after the firsts stars and galaxies formed. Instead, they would grow in tandem with them, gaining most of their mass during the cosmic dark ages, long before starlight illuminated the universe. By the time the first stars ignited, these massive black holes would already be towering cosmic behemoths, coexisting with the earliest celestial structures.
For now, this remains a hypothesis. Researchers suggest incorporating this primordial black hole growth model into simulations of early star and galaxy formation. By comparing the outcomes to real observations, scientists may finally determine if this bold idea can unravel the mystery of the universe’s earliest supermassive black holes.
At this stage, the idea is only a hypothesis. The researchers propose that this model of black hole growth should be incorporated into simulations of the development of the first stars and galaxies to see how realistic the scenario is. Then, they can compare those more realistic black holes to observations and see if this explains the mystery