Lecture Questions Chapter 27

Question 3 When quasars "shine" (in visible light and other kinds of radiation) with a lot of energy, where (what location) does this huge amount of energy come from?

from an accretion disk around a supermassive black hole

Question 1 Today, astronomers find compelling evidence that the energy source of the quasars and active galaxies is

matter falling toward a supermassive black hole at the center of a galaxy

Question 2 After several decades of observation, astronomers have concluded that quasars are

very powerful and compact sources of energy at the centers of distant galaxies