54 citations · 120 across the 6 of their papers we have counts for
7 papers
From Density to Mass: A New Parametrized Framework for Dark Matter Environment Around Black Holes
Rajes Ghosh, Nicholas Speeney, Avijit Chowdhury +3
Astrophysical black holes (BHs) are not isolated vacuum objects but are expected to reside within complex environments, such as dark matter (DM) halos and baryonic distributions. S…
Gravitational Atoms from Topological Stars
Ibrahima Bah, Emanuele Berti, Bogdan Ganchev +2
We study the bound states of a massive scalar field around a topological star, and show that these are strictly normal modes. This yields a genuine gravitational atom, sharply dist…
Extreme mass ratio inspirals in rotating dark matter spikes
Soumodeep Mitra, Nicholas Speeney, Sumanta Chakraborty +1
Gravitational wave (GW) signals from extreme mass ratio inspirals (EMRIs) are a key observational target for the Laser Interferometer Space Antenna (LISA). The waveforms may be aff…
Extreme mass ratio inspirals in dark matter halos: dynamics and distinguishability of halo models
Sara Gliorio, Emanuele Berti, Andrea Maselli +1
The gravitational wave (GW) signals from extreme mass-ratio inspirals (EMRIs), a key target for the Laser Interferometer Space Antenna (LISA), will be affected in the presence of d…
Black holes surrounded by generic matter distributions: polar perturbations and energy flux
Nicholas Speeney, Emanuele Berti, Vitor Cardoso +1
We develop a numerical approach to compute polar parity perturbations within fully relativistic models of black hole systems embedded in generic, spherically symmetric, anisotropic…
Cavity effect in the quasinormal mode spectrum of topological stars
Pierre Heidmann, Nicholas Speeney, Emanuele Berti +1
We study scalar perturbations of topological solitons, smooth horizonless solutions in five-dimensional Einstein-Maxwell theory that correspond to coherent states of gravity via th…
The impact of relativistic corrections on the detectability of dark-matter spikes with gravitational waves
Nicholas Speeney, Andrea Antonelli, Vishal Baibhav +1
Black holes located within a dark matter cloud can create overdensity regions known as dark matter spikes. The presence of spikes modifies the gravitational-wave signals from binar…