In some radio galaxies, we see only one side of the jet because
A) the black hole produces a jet in only one direction.
B) of relativistic beaming.
C) the other side is inside the black hole's event horizon.
D) of dust obscuration.
E) of dark matter that blocks the light from one side of the jet.

Question

Quizplus · Accepted Answer

Relativistic beaming causes the jet moving towards us to appear brighter, while the jet moving away is dimmed, making it less visible or invisible.

In Some Radio Galaxies, We See Only One Side of the Jet