[andrewflnr]

FWIW, the sun's schwarzchild radius is more like inches than Angstroms. Still small compared to the sun, but not that small.

[pdonis]

> the sun's schwarzchild radius is more like inches than Angstroms.

No, it's not inches, it's about 3 kilometers.

But the holes at the center of stars that the paper is talking about have tiny masses, much, much smaller than those of the stars they are inside. Their schwarzschild radius could indeed be of the order of Angstroms.

[andrewflnr]

Oops. I didn't remember it being that much bigger than Earth's.

[Sharlin]

The article is not talking about solar-mass BHs but ~asteroid-mass ones, with a Schwarzschild radius on the order of nanometers to micrometers.