What can distinguish a black hole from an unseen neutron star, other than evidence of theobject's mass?

Question

Quizplus · Accepted Answer

Characteristics of the accretion disk can distinguish a black hole from a neutron star. In a black hole, the accretion disk would be hotter, brighter, and emit more X-rays than in a neutron star's accretion disk. The accretion disk may also exhibit a distinctive "flare" as matter spirals into the black hole's event horizon. Neutron stars are thought to have accretion disks, like black holes, but they have distinct characteristics that can be studied through X-ray emissions. Therefore, characteristics of the accretion disk can help distinguish between a black hole and an unseen neutron star. The other options do not provide a clear distinction between the two objects.

What Can Distinguish a Black Hole from an Unseen Neutron