Black Holes can SPIN?!?

Most sources talk about Schwarzschild black holes, but those don't spin. Most are what we call Kerr black holes, or rotating black holes, surrounded by a region called an ergosphere. The spacetime around them is not only stretched, but also twisted, leading to some strange phenomena.
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VIDEO ANNOTATIONS/CARDS

Black Hole Playlist:
https://www.youtube.com/playlist?list=PLOVL_fPox2K-zpTeryROTkmzzsMssSMWp

What is Electric Charge?
https://youtu.be/gvX29HPmBEI

The Ultimate Guide to Relativity:
https://youtu.be/FdWMM6aXpYE
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RELATED YOUTUBE VIDEOS

Veritasium on Spinning Black Holes:
https://youtu.be/fu3645D4ZlI

Kurzgesagt on Spinning Black Holes:
https://youtu.be/ulCdoCfw-bY

Fraser Cain on Spinning Black Holes:
https://youtu.be/SMrwHnow3hk
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OTHER SOURCES

http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NAME+Sgr+A*
https://arxiv.org/abs/1410.2130
http://notizblock.yukterez.net/viewtopic.php?p=225/
http://www.madore.org/~david/math/kerr.html
https://www.nature.com/news/spin-rate-of-black-holes-pinned-down-1.13512
https://www.nasa.gov/mission_pages/nustar/multimedia/pia16696.html
http://www.astro.ucla.edu/~ghezgroup/gc/journey/smbh.html
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LINKS TO COMMENTS

https://www.youtube.com/watch?v=C7tQJ42nGno&lc=UgzASerpKIUtyprIaKd4AaABAg
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IMAGE CREDITS

Supermassive Black Hole:
https://www.eso.org/public/videos/eso1835c/

Black Hole Eating:
https://svs.gsfc.nasa.gov/12005

#blackholes #astronomy #generalrelativity

Видео Black Holes can SPIN?!? канала The Science Asylum