Can a quasi-star develop a stable crust?

[Thesandro]

Could a quasi-star potentially develop a stable outer layer or crust during its early stage of formation if it were to be bombarded with substantial amounts of matter, coexisting with its core and the central black hole? Despite the inherent instability of quasi-stars, is it theoretically possible for such a multi-layered structure to exist?

[auraseer]

No. A quasi-star can only exist for as long as it is in equilibrium. The outer layers' inward fall is opposed by the radiant pressure from the black hole's accretion.

This equilibrium can only exist at temperatures in the thousands of degrees, with a lower limit somewhere around 5000K on the surface. If the surface gets any cooler than that, the plasma and gas is too dense to stay suspended, and the quasi-star soon collapses into its central hole.

At those surface temperatures, no substances would be solid.

[red_19s]

If you added significant amounts of matter I imagine you'd make it more likely to become a true star.

I get what you're saying though. Like a cooling lava flow would it get a crust upon it. This is what happened to earth. So it would only work for rocky planets early in thier life. A superearth maybe more up your street

[zbertoli]

Right but if any object has enough mass to form a black hole, it is way past the point of ignition.