Blog Roll

The Quasar Main Sequence

Astronomers are edging closer to understanding why some quasars look different from others. Quasars are the most powerful active galactic nuclei, blazing beacons in distant galaxies’ centers powered by supermassive black holes chowing down gas. Their visible-light emission comes from two main sources: the hot accretion disk around the black hole, and gas clouds orbiting nearby that are ionized by the radiation coming from the disk.

Read More

<< Go back to the previous page

Published on