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Black Hole Seeds

All articles tagged with #black hole seeds

science20 days ago•5 min saved

JWST Uncovers Direct-Collapse Black Hole Seeds Behind the Little Red Dots

The James Webb Space Telescope’s Little Red Dots are identified as accreting direct-collapse black holes formed directly from primordial gas in the early universe. Radiation–hydrodynamic simulations show these objects reproduce Webb’s observations—weak X-ray emission, metal and high-ionization lines, lack of star-formation features, compact sizes, and redshift evolution—solving the timing problem of how supermassive black holes could appear so early and signaling JWST is witnessing black hole seed formation.

via Universe Today|

#black-hole-seeds #direct-collapse-black-holes #early-universe

astronomy2 years ago•5 min saved

"Surprising Discovery: Massive Black Holes Overpowering Small Galaxies in Early Universe"

Astronomers using the James Webb Space Telescope have discovered unexpectedly massive supermassive black holes in the centers of early galaxies, challenging previous assumptions about their mass relative to their host galaxies. These findings provide new insights into the origins of supermassive black holes and their host galaxies in the early universe, suggesting that the black holes may have originated from heavy seeds and grew to be as massive as or even more massive than the stellar component of their host galaxies. This discovery was made possible by JWST's ability to observe lower-mass supermassive black holes in small, distant galaxies, shedding light on the evolution of black holes and their host galaxies.

via Phys.org|

#astronomy #black-hole-seeds #early-universe