13)According to the theory that active galactic nuclei are powered by supermassive black holes,the high luminosity of an active galactic nucleus primarily consists of
A)light emitted by hot gas in an accretion disk that swirls around the black hole.
B)intense radiation emitted by the black hole itself.
C)the combined light of thousands of young,high-mass stars that orbit the black hole.
D)radio waves emitted from radio lobes found on either side of the galaxy we see in visible light.

Question

Quizplus · Accepted Answer

The theory proposes that the supermassive black hole at the center of an active galactic nucleus attracts and feeds on surrounding matter, creating an accretion disk of hot gas that emits intense radiation, including visible light. Therefore, the high luminosity of an active galactic nucleus primarily consists of light emitted by hot gas in an accretion disk that swirls around the black hole.

13)According to the Theory That Active Galactic Nuclei Are Powered