Early universe

UNCOVERing the High-redshift AGN Population among Extreme UV Line Emitters
JWST has revealed diverse new populations of high-redshift (z ∼ 4–11) active galactic nuclei (AGNs) and extreme star-forming galaxies …
UNCOVER: A NIRSpec Census of Lensed Galaxies at z = 8.50–13.08 Probing a High-AGN Fraction and Ionized Bubbles in the Shadow
We present JWST NIRSpec prism spectroscopy of lensed galaxies at z gtrsim 9 found behind the massive galaxy cluster Abell 2744 in the …
UNCOVER: A NIRSpec Identification of a Broad-line AGN at z = 8.50
Deep observations with the James Webb Space Telescope (JWST) have revealed an emerging population of red pointlike sources that could …
UNCOVER: Illuminating the Early Universe-JWST/NIRSpec Confirmation of z > 12 Galaxies
Observations of high-redshift galaxies provide a critical direct test to the theories of early galaxy formation, yet to date, only …
UNCOVER: The Growth of the First Massive Black Holes from JWST/NIRSpec-Spectroscopic Redshift Confirmation of an X-Ray Luminous AGN at z = 10.1
The James Webb Space Telescope is now detecting early black holes (BHs) as they transition from ``seeds’’ to supermassive …