The fabric of spacetime may be frothing with gigantic gravitational waves, and the possibility has sent physicists into a tizzy. A potential signal seen in the light from dead stellar cores known as pulsars has driven a flurry of theoretical papers speculating about exotic explanations. Scientific American reports: The most mundane, yet still quite sensational, possibility is that researchers working with…
Tag: primordial black holes
Are primordial black holes really giant gravitinos?
New research proposes that the first black holes came from clumps of gravitinos, exotic, hypothetical particles that managed to survive the first chaotic years of the Big Bang. Source: https://www.livescience.com/primordial-black-holes-giant-gravitinos
Physicists Argue That Black Holes From the Big Bang Could Be the Dark Matter
Long-time Slashdot reader fahrbot-bot quotes Quanta magazine:
It was an old idea of Stephen Hawking’s: Unseen “primordial” black holes might be the hidden dark matter. It fell out of favor for decades, but a new series of studies has shown how the theory can work… Their very blackness makes it hard to estimate how many black holes inhabit the cosmos and how…
On the hunt for primordial black holes
The theory that dark matter could be made of primordial black holes a fraction of a millimeter in size has been ruled out by a team of researchers led by the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU). Source: https://phys.org/news/2020-01-primordial-black-holes.html…
The universe’s oldest black holes could also be its most useful
Primordial black holes born in the moments after the big bang could clear up some of cosmology’s most confounding conundrums Source: https://www.newscientist.com/article/mg24432510-600-the-universes-oldest-black-holes-could-also-be-its-most-useful/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Born in the big bang: How ancient black holes could save cosmology
Exotic primordial black holes born in the moments after the universe began could be the key to solving some of cosmology’s biggest problems… if only we can find them. Source: https://www.newscientist.com/article/mg24432510-600-born-in-the-big-bang-how-ancient-black-holes-could-save-cosmology/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…