16 Jan
2017
16 Jan
'17
11:26 p.m.
On 17/01/17 07:48, Maitraya Bhattacharyya wrote:
Dear Eloisa and others,
What I have is information about the 4d metric along an axis (say the z axis). As far as I recall correctly, this is a Kerr black hole without any scalar field but I may be wrong about that.
Hi,
unfortunately, if you do not have spherical symmetry, the geometry along a single axis is insufficient information to locate an event horizon. If you knew anything else about the solution (for instance, its mass and angular-momentum parameters, and that it was exactly vacuum), you could reconstruct enough of the rest to be able to locate the horizon.
Best, Eloisa