Speaker
Young-Hwan Hyun
(Chung-Ang University)
Description
Building on the conformal construction proposed by Ashtekar et al., we implement a conformal-mapping method (CMM) to compute geometrically defined black-hole horizon multipoles without assuming axisymmetry. Unlike approximate-symmetry-based methods, which can suffer from abrupt frame changes when the preferred axis becomes unstable, the CMM provides smooth multipole evolution in a fixed reference frame. Validated against analytic Kerr results and applied to an equal-mass, non-spinning binary merger, the method captures quadrupole growth during inspiral and ringdown-like decay after merger.
Primary authors
Dr
Yeong-Bok Bae
(Chung-Ang University)
Young-Hwan Hyun
(Chung-Ang University)
Prof.
Gungwon Kang
(Chung-Ang University)
