The unified model describes active galactic nuclei using
A) a super massive black hole at the center of a normal spiral galaxy.
B) a super massive black hole surrounded by an accretion disk and a dense disk of gas.
C) an accretion disk around a neutron star.
D) gravitational lenses to intensify the radiation coming from them.
E) different lines of sight toward a dwarf irregular galaxy.
Correct Answer:
Verified
Q1: In the unified model of active galactic
Q2: The local hypothesis states that
A) active galactic
Q3: Astronomers can estimate the mass of the
Q4: Quasars must be small because they
A) have
Q5: The fact that many radio lobes emit
Q7: The tiny point sources of many quasars
Q9: Head-tail galaxies are
A) found most often in
Q10: The hot spots in the double-lobed radio
Q11: Recent high resolution radio observations show that
Q56: The central galaxy in a double-lobed radio
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