How massive can black holes grow?

How heavy is the heaviest black hole? Can it get any heavier? To understand that we have to understand how black holes grow and how they're limited by the physics of accretion of material. So it got me wondering how long it would take to grow a black hole that contains all the matter in the entire Universe... Of course, it turns out that's not entirely physically possible...

Here are the links to all the papers cited in the video:

Shemmer et al. (2004) - https://arxiv.org/pdf/astro-ph/0406559.pdf
Regan et al. (2018) - https://arxiv.org/pdf/1811.04953.pdf
King (2015) - https://arxiv.org/pdf/1511.08502.pdf

The mass of the entire Universe estimate: http://www.rostra.dk/louis/styr.html?nf=quant_11.html&titel=The%20Extension,%20Age%20and%20Mass%20of%20the%20Universe&fra=

My new book 'Space: The 10 Things You Should Know' is coming out September 5th! You can pre-order it from amazon here: http://bit.ly/SpaceDrBecky
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My sister made the frame in the background as a present when I passed my PhD. It's not a real certificate. It's a decorative print for my office which I love. My sister does commissions: https://megansmethurstdesign.wordpress.com/work/
Dr Becky also presents videos on Sixty Symbols: https://www.youtube.com/user/sixtysymbols
and Deep Sky Videos: https://www.youtube.com/user/DeepSkyVideos

Dr Becky Smethurst is an astrophysicist researching galaxies and supermassive black holes at Christ Church at the University of Oxford.

http://drbecky.uk.com

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Видео How massive can black holes grow? канала Dr. Becky