76 citations · 448 across the 31 of their papers we have counts for
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gr-qc2017★ 7 cited
Stationary black holes with stringy hair
Jens Boos, Valeri P. Frolov
We discuss properties of black holes which are pierced by special configurations of cosmic strings. For static black holes we consider radial strings in the limit when the number o…
gr-qc2017
Kerr principal null directions from Bel--Robinson and Kummer surfaces
Jens Boos, Alberto Favaro
In the Kerr geometry, we calculate various surfaces of constant curvature invariants. These extend well beyond the Kerr horizon, and we argue that they might be of observational si…