
#1
Nov712, 04:11 AM

P: 259

An amount of material I have read recently refers (specifically) to the spherical case of blackholes. Are there nonspherical blackholes?
Regards, Noel. 



#2
Nov712, 04:27 AM

Sci Advisor
PF Gold
P: 9,183

There are 4 known solutions to Einstein field equations for black holes. Two of the four are rotating black holes, which are not spherical  Kerr and KerrNewman black holes. The other two are the Schwarzschild and ReissnerNordstrom black holes, which are static and spherical. In each case, one variant carries no charge and the other has a charge.




#3
Nov712, 05:40 AM

P: 259

Thanks Chronos. Can I just confirm  rotating implies nonspherical, is that correct?
Regards, Noel. 



#4
Nov712, 05:37 PM

Sci Advisor
PF Gold
P: 9,183

Are there nonspherical blackholes?
Correct. See http://www.madore.org/~david/math/kerr.html for further discussion.




#5
Nov812, 07:28 AM

P: 259

Thanks Chronos.



Register to reply 
Related Discussions  
Block moving on a circular trackWork energy Circular Motion problem  Introductory Physics Homework  34  
Circular motion: Car driving along a circular hill  Introductory Physics Homework  2  
Uniform circular motion  plane in a circular arc  Introductory Physics Homework  1  
Identifying the forces in a difficult circular / noncircular motion hybrid problem.  Introductory Physics Homework  5  
Circular logic circular philosophy?  General Discussion  2 