Tag

Active Galaxies

All articles tagged with #active galaxies

astronomy1 year ago•1 min saved

"Unveiling the Mysteries of Active Galaxies and the Universe"

In a recent podcast episode, Skylar Grayson, a PhD candidate at Arizona State University, discusses the impact of active galaxies, which are characterized by supermassive black holes at their centers. These galaxies exhibit phenomena such as accretion disks and jets, influencing not only their immediate surroundings but also larger structures in the Universe. Grayson's work in computational astrophysics aims to model and understand the profound role of active galaxies in shaping the cosmos.

via Big Think|

#active-galaxies #astronomy #astrophysics

astronomy2 years ago•3 min saved

"Radio Signals Reveal Thousands of Active Red Galaxy Hearts, Say Astronomers"

Astronomers have discovered thousands of red quasars emitting powerful radio signals, indicating a generation of younger active galaxies with supermassive black holes that have recently become more active. Red quasars, which appear red due to the presence of cosmic dust, emit stronger radio waves than their blue counterparts. The interaction between radiation outflows from the quasars and surrounding dust causes the emission of radio waves. The discovery of red quasars provides valuable insights into the evolution of galaxies and the relationship between quasar activity and galactic growth.

via Yahoo! Voices|

#active-galaxies #astronomy #cosmic-dust

astronomy2 years ago•2 min saved

"JWST's Surprising Discovery: Active Galaxies Scarce in the Early Universe"

A new study using the James Webb Space Telescope (JWST) suggests that active black holes are rare during the cosmic noon period, contradicting previous assumptions. The study focused on the Extended Groth Strip (ESG) and found that most galactic black holes grow at a slower pace, with smaller galaxies resembling the Milky Way. The team plans to conduct a larger survey of 5,000 galaxies next year to further investigate these findings.

via Universe Today|

#active-galaxies #astronomy #cosmic-evolution