90 citations · 133 across the 4 of their papers we have counts for
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gr-qc2008★ 41 cited
Possible discovery of a nonlinear tail and second-order quasinormal modes in black hole ringdown
Satoshi Okuzumi, Kunihito Ioka, Masa-aki Sakagami
We investigate the nonlinear evolution of black hole ringdown in the framework of higher-order metric perturbation theory. By solving the initial-value problem of a simplified nonl…
gr-qc2007★ 90 cited
Second Order Quasi-Normal Mode of the Schwarzschild Black Hole
Hiroyuki Nakano, Kunihito Ioka
We formulate and calculate the second order quasi-normal modes (QNMs) of a Schwarzschild black hole (BH). Gravitational wave (GW) from a distorted BH, so called ringdown, is well u…