Spacetimes with closed spacelike hypersurfaces and spacelike two-parameter isometry groups are investigated to determine their possible global structures. It is shown that the two spacelike Killing vectors always commute with each other. Connected group-invariant spacelike hypersurfaces must be home
Apparent horizons in the two-black-hole problem
✍ Scribed by Andrej Čadež
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 356 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0003-4916
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✦ Synopsis
The apparent horizon of the two-black-hole problem on the time-symmetric spacelike hypersurface is studied. Its area is computed as a function of the separtion parameter. The critical value of the separation parameter for which the two black holes merge is computed.
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