Re: Black hole at the center of Milky Way actually dark matter?
Posted: June 20th, 2021, 7:38 pm
I was jesting. And yes, you’re right. Touché.
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XFool wrote:ursaminortaur wrote:I seem to remember seeing a TV program a few years ago about the problems with how quickly super massive black holes formed in the early universe which included direct collapse of dark matter into black holes as one suggested solution. The other solution suggested was dark stars - stars made from a mixture of normal hydrogen and dark matter which were much larger than normal since they were powered by dark matter annihilation.
What would cause the "dark matter annihilation"? Or do we have to envisage anti-dark matter as well?
ursaminortaur wrote:XFool wrote:ursaminortaur wrote:I seem to remember seeing a TV program a few years ago about the problems with how quickly super massive black holes formed in the early universe which included direct collapse of dark matter into black holes as one suggested solution. The other solution suggested was dark stars - stars made from a mixture of normal hydrogen and dark matter which were much larger than normal since they were powered by dark matter annihilation.
What would cause the "dark matter annihilation"? Or do we have to envisage anti-dark matter as well?
As explained in the link about dark stars the idea is that the dark matter particles are their own antiparticles
https://astronomy.com/magazine/2018/09/dark-stars-come-into-the-light
Supersymmetry theory proposes that each type of particle has an identical, oppositely charged partner called an antiparticle. (Since WIMPS have no charge, they act as their own antiparticles.) When these partners — the particle and antiparticle — meet, they collide with a bang, utterly destroying one another in a shower of light, energy, and, in some cases, newly conceived lighter particles.
XFool wrote:ursaminortaur wrote:XFool wrote:What would cause the "dark matter annihilation"? Or do we have to envisage anti-dark matter as well?
As explained in the link about dark stars the idea is that the dark matter particles are their own antiparticles
https://astronomy.com/magazine/2018/09/dark-stars-come-into-the-light
Supersymmetry theory proposes that each type of particle has an identical, oppositely charged partner called an antiparticle. (Since WIMPS have no charge, they act as their own antiparticles.) When these partners — the particle and antiparticle — meet, they collide with a bang, utterly destroying one another in a shower of light, energy, and, in some cases, newly conceived lighter particles.
Sadly, as with most ideas in contemporary physics, that only seems to raise more questions than it answers. Such as: Why is dark matter - particles of which are their own antiparticles - only self annihilating in these dark stars, rather than wherever it was in space? In which case why would it ever be dark?