Is dark matter made of black holes?

We can’t see black holes. We can’t see dark matter and we don't know what it's made of. So what if the elusive dark matter is actually made of black holes? Primordial black holes to be precise. This is an idea that has been kicking around the astrophysics world for 30 years or so - but how realistic is it? And how we do we even figure this question out?

Macho Collaboration et al. (2000) - https://arxiv.org/abs/astro-ph/0001272
LIGO collaboration (2016) - https://dcc.ligo.org/public/0122/P150914/014/LIGO-P150914_Detection_of_GW150914.pdf
Bird et al. (2016) - https://arxiv.org/pdf/1603.00464.pdf
Clesse & García-Belledo (2016) - https://arxiv.org/pdf/1603.05234.pdf
Munoz et al. (2016) - https://arxiv.org/pdf/1605.00008.pdf

15:51 - Image credit: Julian Muñoz
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👩🏽‍💻 Dr Becky Smethurst is an astrophysicist researching galaxies and supermassive black holes at Christ Church at the University of Oxford. http://drbecky.uk.com https://rebeccasmethurst.co.uk

Видео Is dark matter made of black holes? канала Dr. Becky