You are viewing a single comment's thread from:
RE: Introducing my own research work: about dark top models
Finally, dark matter can also be indirectly detected. Dark matter may annihilate somewhere in the universe into normal matter.
Does this have anything to do with the "warm-hot intergalactic medium"? I once heard about this; can't remember though.
I never knew Dark matter can annihilate into normal matter... can this be the reason it has not been discovered yet.
One more silly question: At the point of annihilation, can it be referred to as "Hot Dark Matter"?
Nice piece sir
In the same way you can collider normal matter at colliders to produce dark matter, the same reaction can be inverted: dark matter can annihilate back into normal matter. This normal matter then radiates, which gives some extra cosmic or gamma rays that can be detected on Earth.
This is not connected to the warm-hot galactic medium that is solely made of normal matter and not dark matter.
Dark matter is in principle believe to be cold (as favored by structure formation) but hot dark matter (dark matter particle with high velocities) is not totally excluded. It can be present, only if other cold dark matter particles pervade the universe.