49 citations · 98 across the 7 of their papers we have counts for
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gr-qc2001★ 7 cited
On the Symmetries of the Edgar-Ludwig Metric
Alan Barnes
The conformal Killing equations for the most general (non-plane wave) conformally flat pure radiation field are solved to find the conformal Killing vectors. As expected fifteen in…
gr-qc2001★ 9 cited
Some Restrictions on Symmetry Groups of Axially Symmetric Spacetimes
Alan Barnes
Lie transformation groups containing a one-dimensional subgroup acting cyclically on a manifold are considered. The structure of the group is found to be considerably restricted by…