Why do astronomers believe supermassive black holes are the source of an AGN s energy?

Question

Quizplus · Accepted Answer

All the options given in the question support the theory that supermassive black holes are the source of an AGN's energy. Option A indicates that such black holes are commonly found at the center of most galaxies, both active and inactive. Option B suggests that even low mass black holes have been observed with accretion disks inside our galaxy, indicating that black holes can have accretion disks. Option C indicates that jets and accretion disks have been observed in active galaxies, which supports the idea that black holes are the source of energy in AGNs. Finally, option D indicates that black holes have the capacity to produce a tremendous amount of energy in a very small space, making them likely candidates to be the source of an AGN's energy. Astronomers believe supermassive black holes are the source of an AGN's energy because such black holes have been found at the center of most galaxies, both active and inactive. Radio jets and accretion disks have been observed in active galaxies, and similar phenomena have been seen from low mass black holes plus accretion disks inside our galaxy. Additionally, black holes can produce tremendous amounts of energy in a small space. All of these observations and theories support the belief that supermassive black holes are the source of an AGN's energy.

Why Do Astronomers Believe Supermassive Black Holes Are the Source