Author

Junehyoung Jeon

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Preprint Oct 2026

Heavy Seeds and the Multi-scale Fueling of Early Supermassive Black Holes and Little Red Dots

The formation of supermassive black holes (SMBHs) in the early Universe has been a longstanding mystery due to the brief period available to assemble them. More recently, the unexpected discovery with the James Webb Space Telescope (JWST) of Little Red Dots (LRDs), compact sources exhibiting signatures of active galact...

Junehyoung Jeon, V. Bromm, Bo-Yuan Liu et al. · 0 citations

Preprint Aug 2026

Early Supermassive Black Holes and Little Red Dots Require Free-Fall Growth

Supermassive black holes/active galactic nuclei (SMBHs/AGN), forming only a few hundred million years after the Big Bang as observed with the James Webb Space Telescope (JWST), challenge theoretical understanding. How could they grow so massive $(M_{\rm BH}>10^6 {\rm \,M}_\odot)$ so quickly after initial seeding? Is th...

Junehyoung Jeon, V. Bromm, M. Boylan-Kolchin et al. · 0 citations