13 citations · 22 across the 9 of their papers we have counts for
4 papers · 1 filter
Black Hole Mergers as the Fastest Photon Ring Scramblers
D. Giataganas, G. F. Giudice, A. Ianniccari +5
Black holes are the most efficient scramblers in nature. By mapping the instantaneous mass and angular momentum of two spinless black holes in a quasi-circular binary onto those of…
Nonlinearities of Schwarzschild Black Hole Head-on Collisions
Alex Kehagias, Davide Perrone, Antonio Riotto
We derive analytically the amplitude of the quadratic quasi-normal mode generated in the ringdown stage of the gravitational waveform produced by the ultra-relativistic head-on col…
Non-linear Quasi-Normal Modes of the Schwarzschild Black Hole from the Penrose Limit
Alex Kehagias, Davide Perrone, Antonio Riotto
The Penrose limit connects a plane wave geometry to the photon ring of a black hole, where the quasi-normal modes are located in the eikonal limit. Utilizing this simplification, w…
Deciphering the Instability of the Black Hole Ringdown Quasinormal Spectrum
A. Ianniccari, A. J. Iovino, A. Kehagias +4
The spectrum of the quasinormal modes of the gravitational waves emitted during the ringdown phase following the merger of two black holes is of primary importance in gravitational…