28 citations · 50 across the 11 of their papers we have counts for
11 papers
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…
Dynamical Love Numbers for Black Holes and Beyond from Shell Effective Field Theory
Dimitrios Kosmopoulos, Davide Perrone, Mikhail Solon
We construct a novel effective field theory for a compact body coupled to gravity, whose key feature is that the dynamics of gravitational perturbations is explicitly determined by…
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…
The Irrelevance of Primordial Black Hole Clustering in the LVK mass range
F. Crescimbeni, V. Desjacques, G. Franciolini +6
We show that in realistic models where primordial black holes are formed due to the collapse of sizeable inflationary perturbations, their initial spatial clustering beyond Poisson…
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…
A Short Note on the Love Number of Extremal Reissner-Nordstrom and Kerr-Newman Black Holes
Alex Kehagias, Davide Perrone, Antonio Riotto
We provide a simple proof of why the Love number vanishes for extremal Reissner-Nordstrom and Kerr-Newman black holes. The argument is based on a conformal inversion isometry of th…
Why the Universal Threshold for Primordial Black Hole Formation is Universal
Alex Kehagias, Davide Perrone, Antonio Riotto
We show why the threshold for primordial black hole formation is universal (independent from the shape of the perturbation) when expressed in terms of the volume averaged compactio…
The Black Hole Formation -- Null Geodesic Correspondence
Andrea Ianniccari, Antonio J. Iovino, Alex Kehagias +2
We provide evidence for a correspondence between the formation of black holes and the stability of circular null geodesics around the collapsing perturbation. We first show that th…
The Primordial Black Hole Abundance: The Broader, the Better
A. Ianniccari, A. J. Iovino, A. Kehagias +2
We show that the abundance of primordial black holes, if formed through the collapse of large fluctuations generated during inflation and unless the power spectrum of the curvature…
Renormalized Primordial Black Holes
Gabriele Franciolini, Andrea Ianniccari, Alex Kehagias +2
The formation of primordial black holes in the early universe may happen through the collapse of large curvature perturbations generated during a non-attractor phase of inflation o…