Webb Could Detect if Supermassive Black Holes Formed Directly

An unfolding mystery is how early supermassive black holes got so big, so early. Their high mass is tough to explain through a ladder of mergers; instead, astronomers suggest they could have formed directly from huge clouds of gas. In a new paper, researchers propose the signals these directly-forming supermassive black holes might emit, and how they could even be detectable by James Webb before they collapse.

Jun 27, 2025 - 08:32
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Webb Could Detect if Supermassive Black Holes Formed Directly

This artist’s impression shows a possible seed for the formation of a supermassive black hole. Credit: ESA/Hubble

An unfolding mystery is how early supermassive black holes got so big, so early. Their high mass is tough to explain through a ladder of mergers; instead, astronomers suggest they could have formed directly from huge clouds of gas. In a new paper, researchers propose the signals these directly-forming supermassive black holes might emit, and how they could even be detectable by James Webb before they collapse.