Abstract
The Bonnor-Swaminarayan solutions are boost-rotation symmetric space-times which describe the motion of pairs of accelerating particles which are possibly connected to strings (struts). In an explicit and unified form we present a generalised class of such solutions with a few new observations. We then investigate the possible limits in which the accelerations become unbounded. The resulting space-times represent spherical impulsive gravitational waves with snapping or expanding cosmic strings. We also obtain an exact solution for a snapping string of finite length.
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Podolský, J., Griffiths, J.B. Null Limits of Generalised Bonnor-Swaminarayan Solutions. General Relativity and Gravitation 33, 37–57 (2001). https://doi.org/10.1023/A:1002071802044
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DOI: https://doi.org/10.1023/A:1002071802044