Re: Have huge stars powered by Dark Matter been discovered?

2023-08-10 Thread John Clark
On Wed, Aug 9, 2023 at 10:04 PM 'spudboy...@aol.com' via Everything List < everything-list@googlegroups.com> wrote: *> How, would a dark star function? If we found one, in actuality, could we > somehow construct a fusion reactor that runs on dark energy.* > Even the universe doesn't know how to

Re: Have huge stars powered by Dark Matter been discovered?

2023-08-10 Thread Jesse Mazer
Any links on this argument? If we do assume that dark matter is made of WIMPs and that they *were* approximately in thermal equilibrium not long after the Big Bang, does the argument imply an upper limit on the collider energy needed to observe them, because WIMPs at higher energies than this

Re: Have huge stars powered by Dark Matter been discovered?

2023-08-10 Thread smitra
A more model independent argument (which does have loopholes) goes as follows. The weaker WIMPS interact with themselves and with baryons, the sooner after the Big Bang they decouple, leading to a higher present-day abundance. Then with the present-day abundance fixed, this implies limits on

Re: Have huge stars powered by Dark Matter been discovered?

2023-08-10 Thread John Clark
On Wed, Aug 9, 2023 at 7:42 PM Jesse Mazer wrote: *> Does the idea that colliders should have already found WIMPs depend on > the "naturalness" idea at > https://en.wikipedia.org/wiki/Naturalness_(physics) > which requires > supersymmetric