In the "unified model" of active galaxies, the main difference among quasars, blazars, and radio galaxies appears to be that:
A)the mass of the central black hole is different in each case-largest in quasars, less in blazars, and least in radio galaxies.
B)the rate at which matter is falling into the central black hole is different in each case-highest in quasars, less in blazars, and lowest in radio galaxies.
C)the galaxy type is different in each case-spiral for blazars, elliptical for quasars, and irregular for radio galaxies.
D)we see the accretion disk around the central black hole from a different angle in each case-face on for blazars, edge on for radio galaxies, and in between for quasars.

Question

Quizplus · Accepted Answer

In the unified model, the main difference among quasars, blazars, and radio galaxies is the orientation of the accretion disk around the central black hole. Blazars have a face-on view of the disk, while radio galaxies have an edge-on view, and quasars are somewhere in between. The mass of the black hole and the rate of matter falling into it are believed to be similar among all three types of active galaxies in the unified model.

In the "Unified Model" of Active Galaxies, the Main Difference