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gr-qc2026
Universal Structure of Horizon Formation in Generic Binary Black Hole Mergers
Yu-Cun Xie, Vaishak Prasad
We derive the local structure of the first common apparent horizon in a generic binary-black-hole merger. This event occurs in the fully nonlinear regime, outside the standard regi…
gr-qc2026
NRHJSur3dq8: a spectral numerical-relativity surrogate family for non-eccentric aligned-spin binary-black-hole waveforms
Vaishak Prasad
We present NRHJSur3dq8, a family of numerical-relativity (NR) surrogates for non-eccentric aligned-spin binary-black-hole waveforms inspired by an action-angle parameterization. Th…