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NGC 1265,an Active Galaxy in the Perseus Cluster,is Described as a Head-Tail

Question 450

Multiple Choice

NGC 1265,an active galaxy in the Perseus cluster,is described as a head-tail source because (see Figure 13-62,Comins,Discovering the Essential Universe,6th ed.) :


A) it resembles a horse's tail and is located near the Horsehead nebula in Orion.
B) the jets are emitted from the radio lobes and stream toward the nucleus, the reverse of what happens in a normal radio galaxy.
C) this galaxy is peculiar and is exploding and sending out many jets that interact with the surrounding intergalactic material.
D) the two jets interact with the rapidly moving intergalactic medium, which sends them streaming out behind the galaxy in a pair of arcs.

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