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gr-qc2026
Black Hole Perturbation Toolkit: Low frequency and post-Newtonian expansions
Jakob Neef, Chris Kavanagh, Adrian Ottewill
The Teukolsky and SpinWeightedSpheroidalHarmonics packages of the black hole perturbation toolkit (BHPT) are one of the main public libraries to compute numerical solutions to the…
gr-qc2026
High-order gravitational late-time tails in Kerr spacetime
Marc Casals, Chris Kavanagh, Jakob Neef +1
We calculate high-order late-time tails of the retarded Green function of the Teukolsky equation for linear field perturbations of (subextremal) Kerr spacetime. We calculate these…