Under what conditions is it possible for a white dwarf star to produce a nova outburst?
A)If the white dwarf is rotating rapidly
B)If the white dwarf completely evaporates,producing gamma rays
C)If the white dwarf accretes matter from a binary companion
D)If the white dwarf collides with another star

Question

Quizplus · Accepted Answer

A white dwarf can produce a nova outburst if it accretes matter from a binary companion. This matter accumulates on the surface of the white dwarf, causing a thermonuclear explosion and a sudden increase in brightness. Rapid rotation or collisions with other stars are not necessary conditions for a nova outburst to occur. Complete evaporation of the white dwarf would result in a different type of event called a gamma-ray burst, not a nova.

Under What Conditions Is It Possible for a White Dwarf