Gas can be pulled off a binary companion by a black hole. The black hole's event horizon is too small to allow all the gas to enter perpendicularly, so it orbits in a ring around the black hole or a neutron star. What is this ring called?
A) gas ring
B) Kerr disk
C) accretion disk
D) ergoregion

Question

Quizplus · Accepted Answer

The ring of gas that orbits around a black hole or a neutron star as it is being pulled off a binary companion is called an accretion disk. This structure forms because the material spirals in towards the compact object, heating up and emitting radiation as it does so.

Gas Can Be Pulled Off a Binary Companion by a Black