Colgate University researchers link gravitational waves to early black hole formation

Researchers at Colgate University are investigating a cosmic gravitational wave background that may hold clues to the origins of the universe's first supermassive black holes. By utilizing pulsar timing arrays—networks of rapidly rotating neutron stars that act as precise cosmic clocks—astronomers can detect minute fluctuations in the arrival time of radio signals caused by passing gravitational waves.

While the most widely accepted explanation for this low-frequency background signal is the presence of supermassive black hole binaries spiraling toward each other, new research suggests the signal may also contain information from the cosmic dawn, dating back more than 13 billion years. One hypothesis involves the existence of 'dark stars,' hypothetical ancient objects that fueled themselves through dark matter heating rather than traditional nuclear fusion. These massive objects could have eventually collapsed to form the seeds of the first supermassive black holes.