The high luminosity of a Seyfert galaxy____.
A) comes from the halo of the galaxy
B) is distributed through the spiral arms
C) is spread through the central bulge
D) is concentrated in a very small region of the nucleus
E) varies over the course of years
Correct Answer:
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Q20: Quasars are caused by galaxy collisions in
Q21: Quasars have a(n) _.
A) extremely high blueshift
B)
Q22: Seyfert galaxies_.
A) often have unique shapes spectra
Q23: The energy output of a Seyfert galaxy_.
A)
Q24: Seyfert galaxies are always _ galaxies.
A) dwarf
B)
Q26: Gas falling into a black hole becomes
Q27: When they were first discovered, quasars appeared
Q28: Many galaxies with erupting black holes are
Q29: A supermassive black hole erupts when _.
A)
Q30: The formation process for supermassive black holes
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