Re:Is dark matter made of primordial black holes?
by perl4ever on Saturday April 21, 2018 @05:21PM
(#16893511)
The articles I read about LIGO detecting collisions between black holes said they were medium sized, meaning several solar masses. I kind of assumed that they wouldn't be able to detect anything orders of magnitude less than solar mass. Is that not correct?
No gamma ray signals as hoped/expected from evaporating PBH’s.
LIGO is not seeing PBH mergers at a rate that would support the numbers required.
Micro lensing studies don’t support it.
Is it’s possible, but it’s much less likely than other theories which allow for less fine tuning of parameters.
There’s a very good graphic that shows what I’m talking about. https://astrobites.org/wp-content/uploads/2017/08/constraint...
From: https://astrobites.org/2017/08/31/could-dark-matter-be-black...