'Stupendously large' primordial black holes ruled out as a dark matter source
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'Stupendously large' primordial black holes ruled out as a dark matter source
phys.org↗Nicholas Leister at the Mainz Institute for Theoretical Physics and colleagues calculated whether "stupendously large" primordial black holes could account for dark matter, which is thought to make up around 85% of the matter in the universe.
- Primordial black holes are hypothetical objects that could have formed from dense matter in the early universe. The team tested black holes each at least 100 billion times the sun's mass.
- They calculated how random clumps of these black holes would make dark matter and radiation uneven. They compared that with measurements of the cosmic microwave background (the faint microwave afterglow of the Big Bang).
- A large population of these black holes would leave uneven patterns in that afterglow, and those patterns do not appear in the measured signal.
- The study does not rule out these black holes entirely. The team assumed all black holes have the same mass, so populations with a range of masses still need study.
A detection of completely dark halos would open up a new window to study the universe.
An alternative model in which the Universe is 26.7 billion years old and needs neither dark matter nor dark energy has held up against several major cosmology tests, warranting further investigation
Triplet of 'Ghostly' Galaxies Hints at What Dark Matter Is and Is Not
Scientists have picked up signals from the smallest scale of nature ever explored, 100 billion times smaller than an atom. Observed at the Large Hadron Collider, it could help develop a new theory of
I watched some videos on dark matter, both for and agianst. The thing I noticed is most of the time the reason it's proven to exist is because you need it to exist for the univers to make sense.