63 citations · 103 across the 9 of their papers we have counts for
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Ruling out matter-induced bumps in black-hole effective potentials
Matteo Della Rocca, Romeo Felice Rosato, Paolo Pani
Matter fields localized around black holes can produce small secondary bumps in the effective potentials governing black-hole perturbations, potentially leading to quasinormal-mode…
Novel Ringdown Tests of General Relativity with Black Hole Graybody Factors
Romeo Felice Rosato, Francesco Crescimbeni, Sophia Yi +2
We present GreyRing, a new model for the post-merger signal in black-hole binary coalescences based on the graybody factor of the remnant. The model accurately reproduces the full…
Singular structures and causality of the Schwarzschild Green's function in the frequency domain
Romeo Felice Rosato, Marina De Amicis, Paolo Pani
We study two singular spectral components of the Green's function of a Schwarzschild black hole and their interpretation in the frequency domain: (i) the low-frequency branch cut,…
Modeling the frequency-domain ringdown amplitude of comparable-mass mergers with greybody factors
Romeo Felice Rosato, Sophia Yi, Emanuele Berti +1
It was recently shown that, in a binary coalescence, the greybody factor of the remnant black hole modulates the post-merger ringdown signal. In this work, we demonstrate that a si…
Excitation factors for horizonless compact objects: long-lived modes, echoes, and greybody factors
Romeo Felice Rosato, Shauvik Biswas, Sumanta Chakraborty +1
We present an analytical and numerical investigation of the quasinormal excitation factors of ultracompact horizonless objects. These systems possess long lived quasinormal modes w…
Greybody factors as robust gravitational observables: insights into post-merger signals and echoes from ultracompact object
Romeo Felice Rosato
The quasinormal mode spectrum plays a central role in modeling the post-merger ringdown phase of binary coalescences of compact objects. However, its interpretation is subject to c…
On the universality of late-time ringdown tail
Romeo Felice Rosato, Paolo Pani
The late time response of vacuum black holes in General Relativity is notoriously governed by power law tails arising from the wave scattering off the curved spacetime geometry far…
Greybody factors, reflectionless scattering modes, and echoes of ultracompact horizonless objects
Romeo Felice Rosato, Shauvik Biswas, Sumanta Chakraborty +1
Motivated by a recently discovered connection between the greybody factors of black holes and the ringdown signal, we investigate the greybody factors of ultracompact horizonless o…
Ringdown stability: greybody factors as stable gravitational-wave observables
Romeo Felice Rosato, Kyriakos Destounis, Paolo Pani
The quasinormal mode spectrum of black holes plays a crucial role in the modelling of post-merger ringdown signals. However, the spectrum is extremely sensitive to small deformatio…