129 citations · 566 across the 19 of their papers we have counts for
19 papers
Modeling Relativistic Tidal Disruptions of MESA Stars
Liam M. Wang, Giovanni Maria Tomaselli, Zihan Zhou
Tidal disruption events (TDEs) occur when a star passes so close to a black hole that its self-gravity is overcome by the external tidal field. As the star passes, it initially def…
Is S301 the Captured Companion of the Hypervelocity Star S5-HVS1?
Andrea Caputo, Giovanni Maria Tomaselli
Stellar binary disruptions through the Hills mechanism produce two fossils: a hypervelocity star (HVS), and a star tightly bound to the supermassive black hole. Among known galacti…
Evolution of Binaries Under Stochastic Perturbations
Andrea Caputo, Giovanni Maria Tomaselli, Chris Hamilton
We develop a general Fokker-Planck framework describing the dynamical evolution of Keplerian binaries subjected to stochastic perturbations. The formalism provides an algorithmic w…
Self-acceleration of Hardening Binaries
Giovanni Maria Tomaselli, Thomas F. M. Spieksma
A Keplerian binary immersed in a bath of lighter particles hardens by ejecting them through gravitational slingshots. This process drives, for example, the evolution of supermassiv…
Probing dense environments around Sgr A* with S-stars dynamics
Giovanni Maria Tomaselli, Andrea Caputo
The orbits of stars around Sgr A*, the Milky Way's supermassive black hole, provide a unique laboratory for testing its environment with unprecedented precision. In this work, we c…
Smooth binary evolution from wide resonances in boson clouds
Giovanni Maria Tomaselli
Ultralight scalars can form superradiant clouds around rotating black holes. These may alter the dynamics of compact binaries and the ensuing waveform through orbital resonances an…
Modeling Tidal Disruptions with Dynamical Tides
Zihan Zhou, Giovanni Maria Tomaselli, Irvin Martínez-Rodríguez +1
Tidal disruption events (TDEs) occur when stars pass close enough to supermassive black holes to be torn apart by tidal forces. Traditionally, these events are studied with computa…
The Science of the Einstein Telescope
Adrian Abac, Raul Abramo, Simone Albanesi +485
Einstein Telescope (ET) is the European project for a gravitational-wave (GW) observatory of third-generation. In this paper we present a comprehensive discussion of its science ob…
Scattering of wave dark matter by supermassive black holes
Giovanni Maria Tomaselli
Recent simulations of wave dark matter around black hole binaries revealed the formation of a universal density profile that co-rotates with the binary. We derive this profile from…
Gravitational Atoms and Black Hole Binaries
Giovanni Maria Tomaselli
Several models of physics beyond the Standard Model predict the existence of new ultralight bosons. This thesis investigates a way to discover such particles through observations o…
Legacy of boson clouds on black hole binaries
Giovanni Maria Tomaselli, Thomas F. M. Spieksma, Gianfranco Bertone
Superradiant clouds of ultralight bosons can leave an imprint on the gravitational waveform of black hole binaries through "ionization" and "resonances." We study the sequence of r…
Resonant history of gravitational atoms in black hole binaries
Giovanni Maria Tomaselli, Thomas F. M. Spieksma, Gianfranco Bertone
Rotating black holes can produce superradiant clouds of ultralight bosons. When the black hole is part of a binary system, its cloud can undergo resonances and ionization. These pr…
Dynamical Friction in Gravitational Atoms
Giovanni Maria Tomaselli, Thomas F. M. Spieksma, Gianfranco Bertone
Due to superradiant instabilities, clouds of ultralight bosons can spontaneously grow around rotating black holes, creating so-called "gravitational atoms". In this work, we study…
Quantum Field Theory on compact stars near the Buchdahl limit
Ignacio A. Reyes, Giovanni Maria Tomaselli
Very compact stars seem to be forbidden in General Relativity. While Buchdahl's theorem sets an upper bound on compactness, further no-go results rely on the existence of two light…
Disks, spikes, and clouds: distinguishing environmental effects on BBH gravitational waveforms
Philippa S. Cole, Gianfranco Bertone, Adam Coogan +5
Future gravitational wave interferometers such as LISA, Taiji, DECIGO, and TianQin, will enable precision studies of the environment surrounding black holes. In this paper, we stud…
Black hole superradiance with (dark) matter accretion
Lam Hui, Y. T. Albert Law, Luca Santoni +3
Studies of black hole superradiance often focus on the growth of a cloud in isolation, accompanied by the spin-down of the black hole. In this paper, we consider the additional eff…
Sharp Signals of Boson Clouds in Black Hole Binary Inspirals
Daniel Baumann, Gianfranco Bertone, John Stout +1
Gravitational waves (GWs) are an exciting new probe of physics beyond the standard models of gravity and particle physics. One interesting possibility is provided by the so-called…
Ionization of Gravitational Atoms
Daniel Baumann, Gianfranco Bertone, John Stout +1
Superradiant instabilities may create clouds of ultralight bosons around rotating black holes, forming so-called "gravitational atoms." It was recently shown that the presence of a…
Lyman-alpha radiation pressure: an analytical exploration
Giovanni Maria Tomaselli, Andrea Ferrara
We study radiation pressure due to Lyman alpha line photons, obtaining and exploring analytical expressions for the force-multiplier, , as a function of…