You Want to Determine Whether a Mystery Object Is a Neutron

You want to determine whether a mystery object is a neutron star or a white dwarf. Which of the following properties would demonstrate that it is definitely a neutron star?

A) It emits most strongly in visible and ultraviolet light.
B) Every decade or so, it erupts in a nova explosion.
C) It is surrounded by a planetary nebula.
D) It dims and brightens more than twice per second.

Correct Answer:

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