Question

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; a rotating ring of dust.
b) A supermassive black hole; a bright accretion disk.
c) A neutron star; a quasar.
d) A planet; a moon.

Answer 1

According to the unified model of active galactic nuclei, a supermassive black hole is in the center surrounded by a rotating ring of dust, with a Type 1 Seyfert or Type 2 Seyfert being observed depending on the viewing angle.

Step-by-step explanation:

The unified model of active galactic nuclei states that a supermassive black hole is in the center surrounded by a rotating ring of dust. Depending on the viewing angle, we can observe either a Type 1 Seyfert or Type 2 Seyfert. The energy emitted from active galactic nuclei and quasars comes from material falling towards and forming a hot accretion disk around the supermassive black hole. Jets are seen in two directions, which are perpendicular to the accretion disk.