107 citations · 686 across the 23 of their papers we have counts for
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gr-qc2019★ 107 cited
Gravitational wave signatures of ultralight vector bosons from black hole superradiance
Nils Siemonsen, William E. East
In the presence of an ultralight bosonic field, spinning black holes are unstable to superradiance. The rotational energy of the black hole is converted into a non-axisymmetric, os…
gr-qc2019★ 61 cited
Test black holes, scattering amplitudes and perturbations of Kerr spacetime
Nils Siemonsen, Justin Vines
It has been suggested that amplitudes for quantum higher-spin massive particles exchanging gravitons lead, via a classical limit, to results for scattering of spinning black holes…