Where are the X-rays produced that are emitted by quasars and other active galactic nuclei?
A)in hot gas in an accretion disk around a central black hole
B)in ionization nebulae of interstellar gas that surround the accretion disk
C)in dust grains in molecular clouds that encircle the active galactic nucleus
D)in fast-moving electrons that jet from the active galactic nucleus
E)all of the above

Question

Quizplus · Accepted Answer

X-rays are produced by the hot gas in the accretion disk around a central supermassive black hole in the active galactic nucleus. This gas is heated to millions of degrees and emits X-rays as it falls towards the black hole. Other options (B, C, D) are not the primary sources of X-rays emitted by quasars and active galactic nuclei.

Where Are the X-Rays Produced That Are Emitted by Quasars