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Are there non-spherical blackholes?

by Lino
Tags: blackholes, nonspherical
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Lino
#1
Nov7-12, 04:11 AM
P: 297
An amount of material I have read recently refers (specifically) to the spherical case of blackholes. Are there non-spherical blackholes?

Regards,

Noel.
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Chronos
#2
Nov7-12, 04:27 AM
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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 Kerr-Newman black holes. The other two are the Schwarzschild and Reissner-Nordstrom black holes, which are static and spherical. In each case, one variant carries no charge and the other has a charge.
Lino
#3
Nov7-12, 05:40 AM
P: 297
Thanks Chronos. Can I just confirm - rotating implies non-spherical, is that correct?

Regards,

Noel.

Chronos
#4
Nov7-12, 05:37 PM
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Are there non-spherical blackholes?

Correct. See http://www.madore.org/~david/math/kerr.html for further discussion.
Lino
#5
Nov8-12, 07:28 AM
P: 297
Thanks Chronos.


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