Comment on Dark Matter Black Holes Could Fly through the Solar System Once a Decade
MartianSands@sh.itjust.works 2 days agoYou don’t need a force to prevent collapse if there’s no drag force to slow things down. It would actually be almost impossible for a cloud of dark matter to collapse since any individual particle has momentum and no way to slow down, so they’ll all be in some sort of mutual orbit
InvertedParallax@lemm.ee 2 days ago
I’m guessing you’ve seen as many lorentz attractor simulations as I have, what always happens is something like tidal effects or angular momentum means 90% slow down while a few particles get shot out of hell at ludicrous speed.
The effect is similar to drag.