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It looks like the case for primordial black holes as dark matter is drawing to a close: http://arxiv.org/abs/1401.3025, Exclusion of the remaining mass window for primordial black holes as the dominant constituent of dark matter.
Chronos said:It looks like the case for primordial black holes as dark matter is drawing to a close: http://arxiv.org/abs/1401.3025, Exclusion of the remaining mass window for primordial black holes as the dominant constituent of dark matter.
Primordial black holes are hypothetical objects that may have formed in the early universe, shortly after the Big Bang. They are believed to be small, dense black holes that were created from the intense gravitational forces present in the early universe.
Yes, some scientists theorize that primordial black holes could make up a significant portion of the dark matter in the universe. However, this is still a topic of ongoing research and has not been definitively proven.
Primordial black holes are significantly smaller and less massive than other black holes, such as those formed from the collapse of a dying star. They are also thought to have formed in a different way, making them unique objects in the universe.
One potential way to detect primordial black holes is through their gravitational effects on surrounding matter, such as bending light from distant stars. Another method is to search for bursts of high-energy radiation emitted from collisions between primordial black holes and other objects in space.
If primordial black holes are indeed a major component of dark matter, it would greatly impact our understanding of the universe and its evolution. It could also help explain some of the observed discrepancies in the amount of visible matter versus the amount of gravitational pull in galaxies and other cosmic structures.