Explorations: An Introduction to Astronomy (Arny), 7th Edition

Chapter 15: Stellar Remnants: White Dwarfs, Neutron Stars, and Black Holes

Questions for Review

Your Results:

1			What are the approximate mass and radius of a white dwarf compared with those of the Sun?
2			How does a white dwarf form?
3			What keeps a white dwarf hot?
4			Can a white dwarf have a mass of 10 solar masses? Why? What happens if a white dwarf increases in mass?
5			What is meant by degeneracy pressure? How is it related to white dwarfs and neutron stars?
6			Explain what makes a nova occur.
7			What is a neutron star?
8			What are the mass and radius of a typical neutron star compared with those of the Sun? Can a neutron star have a mass of 10 solar masses?
9			How does a neutron star form?
10			How do we observe neutron stars?
11			What is a pulsar? Does it pulsate?
12			Are all neutron stars pulsars? Are all pulsars neutron stars?
13			What creates the beams of radiation seen in pulsars?
14			What is nonthermal radiation?
15			What happens when a gravitational wave moves? What does it affect? Compare this to how light waves move.
16			What is a black hole? Are they truly "black"? What properties can they have?
17			What is the Schwarzschild radius?
18			Why might the distance to the event horizon of a black hole vary depending on which direction you measure from the center?
19			Can astronomers see black holes? Explain.
20			What is Hawking radiation?

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