In some radio galaxies, we only see one side of the jet because:
A) the black hole only produces a jet in 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

In radio galaxies, the jets are often directed towards the observer, which results in the phenomenon of relativistic beaming. This means that the jet's radiation is concentrated in a narrow beam, and we only see the side of the jet that is pointed towards us. The other side remains invisible due to the lack of radiation in our direction.

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