Tag

Black Hole Seeds

All articles tagged with #black hole seeds

space16 days ago•6 min saved

James Webb probes possible 100,000-solar-mass stars in the early universe

Using JWST, researchers have spotted more than 300 infrared “Little Red Dots” dating to about 600 million years after the Big Bang that appear compact and unusually red, potentially signaling supermassive stars up to around 100,000 solar masses (with hints of up to a million). If confirmed, these stars could illuminate how seeds of supermassive black holes form, though alternative explanations like dust-enshrouded galaxies or active nuclei remain under investigation.

via Futura, le média qui explore le monde|

#black-hole-seeds #early-universe #james-webb-space-telescope

science6 months 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