3 papers
gr-qc2026
Conformal-Mapping Method for Horizon Multipoles in Numerical Relativity: Implementation, Kerr Validation, and Applications Beyond Axisymmetry
Yeong-Bok Bae, Young-Hwan Hyun, Gungwon Kang
We present a numerical method that constructs geometrically defined coordinates on black-hole horizons, from which the multipole moments are computed without assuming axisymmetry.…
gr-qc2023
A superconducting tensor detector for mid-frequency gravitational waves: its multi-channel nature and main astrophysical targets
Yeong-Bok Bae, Chan Park, Edwin J. Son +13
Mid-frequency band gravitational-wave detectors will be complementary for the existing Earth-based detectors (sensitive above 10 Hz or so) and the future space-based detectors such…
gr-qc2023
Ringdown gravitational waves from close scattering of two black holes
Yeong-Bok Bae, Young-Hwan Hyun, Gungwon Kang
We have numerically investigated close scattering processes of two black holes (BHs). Our careful analysis shows for the first time a non-merging ringdown gravitational wave coming…