Comment by jraines
4 days ago
This PBS Spacetime video pours some cold water on the black holes as dark matter hypothesis:
https://youtu.be/qy8MdewY_TY?si=9jc_a7IAm4qrhfNX
It’s 4 years old; I don’t know if this JWST finding changes anything. I do know we have finally found some (one?) intermediate-mass black holes in the interim, but I don’t know if that changes it either.
The possibility it leaves open for “Planck relics” is interestingly exotic
Yeah the mass ranges these primordial black holes would need to be mean that it cannot possibly be those little red dots. While the early universe magnifies things, the mass of those little red dots still needs to be close to a small galaxy worth of mass. Tens to hundreds of thousands of star masses absolute minimum. And that's just far, far, incredibly far to high.