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doit_the_clown doit_the_clown
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7 years ago
NGC 1265, an active galaxy in the Perseus cluster, is described as a head-tail source because (see Fig. 17-11, Comins and Kaufmann, Discovering the Universe, 7th 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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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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