35 citations · 108 across the 21 of their papers we have counts for
21 papers
Revisiting environmental effects on black hole quasibound-state spectra with relativistic perturbation theory
Yin-Da Guo, Qi-Xuan Xu, Richard Brito +1
We present a relativistic framework for computing corrections to the eigenfrequency spectrum of a massive scalar field in perturbed black-hole spacetimes, including first-order shi…
Dynamical quasinormal mode excitation II: propagation and convergence in Schwarzschild
Marina De Amicis, Enrico Cannizzaro, Gregorio Carullo +2
We study the dynamical excitation of quasinormal modes (QNMs) during the plunge of a particle into a Schwarzschild black hole, building on the framework of Phys. Rev. D 113 (2026)…
Simulating Axion Electrodynamics in Magnetized Plasmas: Energy transfer in the inhomogeneous and strongly varying limit
Fabrizio Corelli, Estanis Utrilla Ginés, Enrico Cannizzaro +2
In this work we study the electromagnetic response induced by axions in a magnetized plasma, focusing specifically on characterizing energy transfer and energy losses from the ambi…
Post-Minkowskian expansion of the Prompt Response in a Schwarzschild background
Marina De Amicis, Enrico Cannizzaro
We study the early-time component of the Green's function of a Schwarzschild black hole, traveling on the curved light cone and usually denoted as the prompt response. Working in a…
Excitation of scalar quasi-normal modes from boson clouds
Enrico Cannizzaro, Marco Palleschi, Laura Sberna +2
Massive scalar fields on black hole backgrounds generally admit two families of modes: quasi-bound states (QBS) and quasinormal modes (QNM). We demonstrate the orthogonality betwee…
Dynamical quasinormal mode excitation
Marina De Amicis, Enrico Cannizzaro, Gregorio Carullo +1
We study the dynamical excitation of quasinormal modes (QNMs) through the plunge, merger and ringdown of an extreme-mass-ratio-inspiral into a Schwarzschild black hole, for generic…
In the grip of the disk: dragging the companion through an AGN
Thomas F. M. Spieksma, Enrico Cannizzaro
Active galactic nuclei (AGN) have been proposed as environments that can facilitate the capture of extreme-mass-ratio binaries and accelerate their inspiral beyond the rate expecte…
Axion dissipation in conductive media and neutron star superradiance
Thomas F. M. Spieksma, Enrico Cannizzaro
In axion electrodynamics, magnetic fields enable axion-photon mixing. Recent proposals suggest that rotating, conductive plasmas in neutron star magnetospheres could trigger axion…
Beyond The Standard Model electrodynamics in the time domain
Fabrizio Corelli, Enrico Cannizzaro, Andrea Caputo +1
Many motivated extensions of the standard model include new light bosons, such as axions and dark photons, which can mix with the ordinary photon. This latter, when in a dilute pla…
Tidal deformability of black holes surrounded by thin accretion disks
Enrico Cannizzaro, Valerio De Luca, Paolo Pani
The tidal Love numbers of self-gravitating compact objects describe their response to external tidal perturbations, such as those from a companion in a binary system, offering valu…
Impact of a plasma on the relaxation of black holes
Enrico Cannizzaro, Thomas F. M. Spieksma, Vitor Cardoso +1
Our universe is permeated with interstellar plasma, which prevents propagation of low-frequency electromagnetic waves. Here, we show that two dramatic consequences arise out of suc…
Phenomenology of ultralight bosons around compact objects: in-medium suppression
Enrico Cannizzaro, Thomas F. M. Spieksma
Mixing between ultralight bosons and the Standard Model photon may allow access to the hitherto invisible Universe. In the presence of plasma, photons are dressed with an effective…
Extreme mass-ratio inspirals as probes of fundamental dipoles
Jacopo Lestingi, Enrico Cannizzaro, Paolo Pani
Even if globally neutral, in various scenarios compact objects can have a nonvanishing dipole moment. Examples include neutron stars with magnetic dipoles, black-hole microstates i…
Relativistic perturbation theory for black-hole boson clouds
Enrico Cannizzaro, Laura Sberna, Stephen R. Green +1
We develop a relativistic perturbation theory for scalar clouds around rotating black holes. We first introduce a relativistic product and corresponding orthogonality relation betw…
Novel tests of gravity using nano-Hertz stochastic gravitational-wave background signals
Enrico Cannizzaro, Gabriele Franciolini, Paolo Pani
Gravity theories that modify General Relativity in the slow-motion regime can introduce nonperturbative corrections to the stochastic gravitational-wave background~(SGWB) from supe…
Superradiance: Axionic Couplings and Plasma Effects
Thomas F. M. Spieksma, Enrico Cannizzaro, Taishi Ikeda +2
Spinning black holes can transfer a significant fraction of their energy to ultralight bosonic fields via superradiance, condensing them in a co-rotating structure or "cloud". This…
Nonlinear photon-plasma interaction and the black hole superradiant instability
Enrico Cannizzaro, Fabrizio Corelli, Paolo Pani
Electromagnetic field confinement due to plasma near accreting black holes can trigger superradiant instabilities at the linear level, limiting the spin of black holes and providin…
Dark photon superradiance quenched by dark matter
Enrico Cannizzaro, Laura Sberna, Andrea Caputo +1
Black-hole superradiance has been used to place very strong bounds on a variety of models of ultralight bosons such as axions, new light scalars, and dark photons. It is common lor…
Superradiant instabilities by accretion disks in scalar-tensor theories
Giuseppe Lingetti, Enrico Cannizzaro, Paolo Pani
We study the superradiant instability in scalar-tensor theories of gravitation, where matter outside a black hole provides an effective mass to the scalar degree of freedom of the…
Plasma-photon interaction in curved spacetime II: collisions, thermal corrections, and superradiant instabilities
Enrico Cannizzaro, Andrea Caputo, Laura Sberna +1
Motivated by electromagnetic-field confinement due to plasma near accreting black holes, we continue our exploration of the linear dynamics of an electromagnetic field propagating…
Plasma-photon interaction in curved spacetime I: formalism and quasibound states around nonspinning black holes
Enrico Cannizzaro, Andrea Caputo, Laura Sberna +1
We investigate the linear dynamics of an electromagnetic field propagating in curved spacetime in the presence of plasma. The dynamical equations are generically more involved and…