The unified model describes active galactic nuclei using
A)a supermassive black hole at the center of a normal spiral galaxy.
B)a supermassive black hole surrounded by an accretion disk and dense disk of gas.
C)an accretion disk around a neutron star.
D)gravitational lenses to intensify the radiation coming from them.
E)different lines of sight toward and dwarf irregular galaxy.

Question

Quizplus · Accepted Answer

The unified model proposes that active galactic nuclei are powered by a supermassive black hole surrounded by an accretion disk and a dense torus of gas and dust. This model can explain the observed differences in their appearance depending on the orientation of our line of sight toward them.

The Unified Model Describes Active Galactic Nuclei Using