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Résumé |
After reviewing the role Quasi-Normal Modes (QNMs) play in the Gravitational
Wave (GW) signals emitted in the ring-down phase of Black-Hole (BH) mergers, we
present a novel approach to compute QNMs of BHs, D-branes and fuzz-balls, based
on quantum Seiberg-Witten (SW) curves for N=2 supersymmetric Yang-Mills (SYM)
theories. We find remarkable agreement with numerical results obtained by means
of Leaver's method of continuous fractions and with semi-classical results
obtained in the eikonal approximation, based on geodetic motion. We identify new
branches of QNMs for fuzz-balls that can lead to late-time echoes in the GW
signal. Finally we discuss the extension of Couch-Torrence (CT) conformal
inversions to D3-branes and their bound states and show that they keep the
photon-rings fixed, while exchanging horizon and infinity. |
