Astronomy & Space Science · AST-888
Origins of Supermassive Black Holes: Physical Mechanisms
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Mechanism
Mechanism of Origins of Supermassive Black Holes
Growth rate is limited by how efficiently gas reaches the black hole and by radiation feedback, although short super-Eddington episodes may occur. Early dense environments, low angular momentum gas, and rapid halo assembly can favor heavy-seed scenarios.
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- 01Webb Reveals Black Hole That Formed Before Its GalaxyOpen source ↗
NASA Science
- 02James Webb Space TelescopeOpen source ↗
NASA Science
View claim-by-claim traceability3 verified claims
Growth rate is limited by how efficiently gas reaches the black hole and by radiation feedback, although short super-Eddington episodes may occur.
supported · checked Sep 22, 2026Supermassive black holes with millions to billions of solar masses already existed surprisingly early in cosmic history, creating a growth-timescale problem.
supported · checked Sep 22, 2026Webb has found actively growing black holes in very early galaxies and, in 2026, NASA reported evidence for systems consistent with very massive black holes forming before a substantially larger host galaxy had assembled.
supported · checked Sep 22, 2026