Rotation of a black hole

  • #1

Main Question or Discussion Point

Is it possible to calculate the rotation speed of a black hole? Idid not find anything on this on google.

thanks
 

Answers and Replies

  • #2
Chronos
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A Kerr black hole has a theoretical rotation component due to conservation of angular momentum. It cannot be measured directly as we cannot observe anything occuring inside the event horizon. I doubt it's meaningful to talk about rotataion with respect to the event horizon. For discussion, see
http://science.howstuffworks.com/black-hole.htm/printable
 
  • #3
I heard in class of a theorie that would use the light emmited from the black hole surroundings to calculate the rotation speed, anyone familiar with these theories?
thanks
 
  • #4
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  • #5
Chronos
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Good link, maria, but, I am unconvinced the authors have derived an effective way to derive the intrinsic spin of a black hole.
 
  • #6
thank you for this link.
 

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