According to the unified model of active galactic nuclei, ___________ is in the center surrounded by _____________with a Type 1 Seyfert or Type 2 Seyfert being seen depending on the viewing angle.
A)a supermassive black hole; an accretion disk
B)a supermassive black hole; empty space
C)no black hole; an accretion disk
D)no black hole; empty space

Question

Quizplus · Accepted Answer

The unified model of active galactic nuclei proposes that a supermassive black hole is at the center of the galaxy and is surrounded by an accretion disk. The type of Seyfert galaxy observed by an observer on Earth depends on the viewing angle, with Type 1 Seyfert galaxies being observed when the accretion disk is viewed directly and Type 2 Seyfert galaxies being observed when the accretion disk is viewed edge-on.

According to the Unified Model of Active Galactic Nuclei, ___________