Scientists Propose Dark Stars as Seeds of Early Supermassive Black Holes

A new theoretical study suggests that “dark stars” formed in the early universe could explain the rapid appearance of supermassive black holes and the persistent gravitational-wave background observed by pulsar timing arrays.

These hypothetical objects would have been powered not by nuclear fusion but by the annihilation of dark matter particles concentrated in their cores. They could have grown to enormous masses before collapsing, leaving behind the black hole seeds that later grew into the giants seen at high redshift.

The idea accounts for a low-frequency gravitational-wave signal that fills the cosmos. Standard explanations involving supermassive black hole binaries remain viable, yet the dark-star model offers an alternative pathway that begins earlier in cosmic history.

Researchers note that the hypothesis remains testable through future gravitational-wave detectors and more precise observations of the first galaxies. No direct detection of a dark star is claimed; the work is an interpretive framework for existing data.

The proposal adds to ongoing efforts to understand how the universe produced billion-solar-mass black holes within the first few hundred million years after the Big Bang. Conventional stellar-collapse models struggle with the required growth rates under standard assumptions.