What Happens to Active Galaxies When Their AGNs Run Out

question 14

Multiple Choice

What happens to active galaxies when their AGNs run out of fuel?

• A) The black holes powering them collapse even further.
• B) They simply become normal galaxies.
• C) They slowly dissipate into clouds of gas and dust.
• D) They eventually pull in material from farther out, starting the AGN process all over again.
• E) They explode as gamma-ray bursts.

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