Calculating Symmetries in Newman-Tamburino metrics
arXiv:gr-qc/0403031
Abstract
In this paper I show that the Newman-Tamburino spherical metrics always admit a Killing vector, correcting a claim by Collinson and French, (1967 J. Math. Phys. 8 701) and also admit a homothety. A similar calculation is given for the limit of the Newman-Tamburino cylindrical metric.