Astronomers detect eleven new active galactic nuclei

A super-Eddington-accreting black hole ~1.5 Gyr after the Big Bang observed with JWST

Recent James Webb Space Telescope (JWST) observations have revealed a surprisingly abundant population of faint, dusty active galactic nuclei at z ≈ 4–7. Together with the presence of supermassive black holes at z > 6, this raises questions about the formation and growth histories of early black holes. Current theories for the formation of seed black holes from the death of the first stars (that is, light seeds) and/or the direct collapse of pri…

Astronomers detect eleven new active galactic nuclei

Using the Spektr-RG (SRG) space observatory, astronomers from the Russian Academy of Sciences have investigated dozens of X-ray sources in all-sky surveys, which resulted in the detection of 11 new active galactic nuclei. The finding was reported in a research paper published in Astronomy Letters.

Identified in the Great Bear, the celestial object UMa3/U1 contains only about sixty stars, but has remained stable for 11 billion years. Enough to question our definitions of what a galaxy is.