Institute of Theoretical Physics · Faculty of Mathematics and Physics, Charles University
Gen. Relativ. Gravit. 52(91) (2020)
A new model for cosmic strings (i.e. conical singularities) attached to black holes is proposed. These string are obtained by a explicit construction via limiting process from the so-called Bonnor rocket. This reveals quite surprising nature of their stress–energy tensor which contains first derivative of Dirac δ distribution. Starting from the Bonnor rocket we explicitly construct the Schwarzschild solution witch conical singularity and the C-metric. In the latter case we show that there is a momentum flux through the cosmic string, causing the acceleration of the black hole and the amount of this momentum is in agreement with the momentum taken away by gravitational radiation.
@article{UTF808,
author = {Kofroň, David},
title = {{On the nature of cosmic strings in black hole spacetimes}},
journal = {Gen. Relativ. Gravit.},
volume = {52},
number = {91},
year = {2020},
month = {9},
doi = {10.1007/s10714-020-02741-8},
}