401 citations · 1.1k across the 31 of their papers we have counts for
5 papers · 1 filter
Conserved currents for Kerr and orthogonality of quasinormal modes
Stephen R. Green, Stefan Hollands, Laura Sberna +2
We introduce a bilinear form for Weyl scalar perturbations of Kerr. The form is symmetric and conserved, and we show that, when combined with a suitable renormalization prescriptio…
Probing Accretion Physics with Gravitational Waves
Lorenzo Speri, Andrea Antonelli, Laura Sberna +4
Gravitational-wave observations of extreme mass ratio inspirals (EMRIs) offer the opportunity to probe the environments of active galactic nuclei (AGN) through the torques that acc…
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…
Observing GW190521-like binary black holes and their environment with LISA
Laura Sberna, Stanislav Babak, Sylvain Marsat +8
Binaries of relatively massive black holes like GW190521 have been proposed to form in dense gas environments, such as the disks of Active Galactic Nuclei (AGNs), and they might be…
Searching for dark-matter waves with PPTA and QUIJOTE pulsar polarimetry
Andrés Castillo, Jorge Martin-Camalich, Jorge Terol-Calvo +6
The polarization of photons emitted by astrophysical sources might be altered as they travel through a dark matter medium composed of ultra light axion-like particles (ALPs). In pa…