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

question 50

Multiple Choice

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.

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