Publications (65)
Massive Black Hole Binaries as LISA Precursors in the Roman High Latitude Time Domain Survey
Zoltán Haiman, Chengcheng Xin, Tamara BogdanoviÄ +27
With its capacity to observe faint active galactic nuclei (AGN) out to redshift , Roman is poised to reveal a population of b…
Gravitational wave background from extreme mass ratio inspirals
Matteo Bonetti, Alberto Sesana
Extreme mass ratio inspirals (EMRIs), i.e. binary systems comprised by a compact stellar-mass object orbiting a massive black hole, are expected to be among the primary gravitation…
Merger rate of stellar black hole binaries above the pair instability mass gap
Alberto Mangiagli, Matteo Bonetti, Alberto Sesana +1
In current stellar evolutionary models, the occurrence of pair instability supernovae implies the lack of stellar black holes (BHs) with masses between about $[60, \, 120] \, \rm{M…
Post-Newtonian Evolution of Massive Black Hole Triplets in Galactic Nuclei: IV. Implications for LISA
Matteo Bonetti, Alberto Sesana, Francesco Haardt +2
Coalescing massive black hole binaries (MBHBs) of , forming in the aftermath of galaxy mergers, are primary targets of the space mission LISA, the {\it Lase…
Multimessenger prospects of quasi-periodic eruptions
VojtÄch Witzany, Alessia Franchini, Matteo Bonetti +1
Quasi-Periodic Eruptions (QPEs) are recurring soft X-ray transients that may be generated by inspirals of stellar-mass objects spiraling into supermassive black holes, known as ext…
LISA Definition Study Report
Monica Colpi, Karsten Danzmann, Martin Hewitson +108
The Laser Interferometer Space Antenna (LISA) is the first scientific endeavour to detect and study gravitational waves from space. LISA will survey the sky for Gravitational Waves…
Test for LISA foreground Gaussianity and stationarity: extreme mass-ratio inspirals
Manuel Piarulli, Riccardo Buscicchio, Federico Pozzoli +3
Extreme Mass Ratio Inspirals (EMRIs) are key observational targets for the Laser Interferometer Space Antenna (LISA) mission. Unresolvable EMRI signals contribute to the formation…
Spacetime in motion: an evolving relativistic binary black hole metric for GIZMO
Giacomo Fedrigo, Alessandro Lupi, Alessia Franchini +1
The last evolutionary stages of massive black hole binaries prior to coalescence is dominated by the emission of gravitational waves, which will be probed by the future Laser Inter…
Astrophysics with the Laser Interferometer Space Antenna
Pau Amaro Seoane, Jeff Andrews, Manuel Arca Sedda +156
The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many…
Hanging on the cliff: Extreme mass ratio inspiral formation with local two-body relaxation and post-Newtonian dynamics
Davide Mancieri, Luca Broggi, Matteo Bonetti +1
Extreme mass ratio inspirals (EMRIs) are anticipated to be primary gravitational wave sources for LISA (Laser Interferometer Space Antenna). They form in dense nuclear clusters whe…
Computation of stochastic background from extreme mass ratio inspiral populations for LISA
Federico Pozzoli, Stanislav Babak, Alberto Sesana +2
Extreme mass ratio inspirals (EMRIs) are among the primary targets for the Laser Interferometer Space Antenna (LISA). The extreme mass ratios of these systems result in relatively…
Emulating the complex galactic-scale orbital dynamics of LISA massive black hole pairs with normalizing flows
Pedro R. Capelo, Carlos Moreno Martinez, Nodens Koren +6
The paper introduces a machine‑learning emulator based on conditional normalizing flows to rapidly predict the orbital decay of massive black hole pairs in galaxy merger remnants,…
The competing effect of gas and stars in massive black hole binaries evolution
Elisa Bortolas, Alessia Franchini, Matteo Bonetti +1
Massive black hole binaries are predicted to form during the hierarchical assembly of cosmic structures and will represent the loudest sources of low-frequency gravitational waves…
On the eccentricity evolution of massive black hole binaries in stellar backgrounds
Matteo Bonetti, Alexander Rasskazov, Alberto Sesana +6
We study the dynamical evolution of eccentric massive black hole binaries (MBHBs) interacting with unbound stars by means of an extensive set of three body scattering experiments.…
Gas-induced perturbations on the gravitational wave in-spiral of live post-Newtonian LISA massive black hole binaries
Mudit Garg, Alessia Franchini, Alessandro Lupi +2
We investigate the effect of dynamically coupling gas torques with gravitational wave (GW) emission during the orbital evolution of an equal-mass massive black hole binary (MBHB).…
Neural Networks unveiling the properties of gravitational wave background from massive black hole binaries
Matteo Bonetti, Alessia Franchini, Bruno Giovanni Galuzzi +1
Massive black hole binaries (MBHBs) are binary systems formed by black holes with mass exceeding millions of solar masses, expected to form and evolve in the nuclei of galaxies. Th…
Connecting low-redshift LISA massive black hole mergers to the nHz stochastic gravitational wave background
David Izquierdo-Villalba, Alberto Sesana, Monica Colpi +4
Pulsar Timing Array (PTA) experiments worldwide recently reported evidence of a nHz stochastic gravitational wave background (sGWB) compatible with the existence of slowly inspiral…
The Advanced X-ray Imaging Satellite (AXIS) Community Science Book
Michael Koss, Nafisa Aftab, Steven W. Allen +395
The AXIS Community Science Book represents the collective effort of 592 scientists worldwide to define the transformative science enabled by the Advanced X-ray Imaging Satellite (A…
Eccentricity distribution of extreme mass ratio inspirals
Davide Mancieri, Luca Broggi, Morgan Vinciguerra +2
We present realistic eccentricity distributions for extreme mass ratio inspirals (EMRIs) forming via the two-body relaxation channel in nuclear star clusters, tracking their evolut…
The role of bars on the dynamical-friction driven inspiral of massive perturbers
Elisa Bortolas, Matteo Bonetti, Massimo Dotti +4
In this paper, we systematically explore the impact of a galactic bar on the inspiral time-scale of a massive object (MO) within a Milky Way-like galaxy. We integrate the orbit of…
-process nucleosynthesis in the early Universe through fast mergers of compact binaries in triple systems
Matteo Bonetti, Albino Perego, Pedro R. Capelo +2
Surface abundance observations of halo stars hint at the occurrence of -process nucleosynthesis at low metallicity (), possibly within the first yr after…
About gravitational-wave generation by a three-body system
Matteo Bonetti, Enrico Barausse, Guillaume Faye +2
We highlight some subtleties that affect naive implementations of quadrupolar and octupolar gravitational waveforms from numerically-integrated trajectories of three-body systems.…
Gravitational waves from an eccentric population of primordial black holes orbiting Sgr A
Stefano Bondani, Matteo Bonetti, Luca Broggi +3
Primordial black holes (PBH), supposedly formed in the very early Universe, have been proposed as a possible viable dark matter candidate. In this work we characterize the expected…
Repeating partial disruptions and two-body relaxation
Luca Broggi, Nicholas C. Stone, Taeho Ryu +4
Two-body relaxation may drive stars onto near-radial orbits around a massive black hole, resulting in a tidal disruption event (TDE). In some circumstances, stars are unlikely to u…
Waveform Modelling for the Laser Interferometer Space Antenna
LISA Consortium Waveform Working Group, Niayesh Afshordi, Sarp Akçay +144
LISA, the Laser Interferometer Space Antenna, will usher in a new era in gravitational-wave astronomy. As the first anticipated space-based gravitational-wave detector, it will exp…
Optical follow-up of the tick-tock massive black hole binary candidate
Massimo Dotti, Matteo Bonetti, Fabio Rigamonti +8
The observation of a population of massive black hole binaries (MBHBs) is key for our complete understanding of galaxy mergers and for the characterization of the expected gravitat…
Eppur si muove: Evidence of disc precession or a sub-milliparsec SMBH binary in the QPE-emitting galaxy GSN 069
Giovanni Miniutti, Alessia Franchini, Matteo Bonetti +8
X-ray quasi-periodic eruptions (QPEs) are intense soft X-ray bursts from the nuclei of nearby low-mass galaxies typically lasting about one hour and repeating every few. Their phys…
Binary black hole signatures in polarized light curves
Massimo Dotti, Matteo Bonetti, Daniel J. D'Orazio +2
Variable active galactic nuclei showing periodic light curves have been proposed as massive black hole binary (MBHB) candidates. In such scenarios the periodicity can be due to rel…
Assessing the performance of future space-based detectors: Astrophysical foregrounds and individual sources
Alice Perego, Matteo Bonetti, Alberto Sesana +2
The paper evaluates the detection capabilities of three proposed post‑LISA space‑based gravitational‑wave missions (μAres, AMIGO, and the Decihertz Observatory) by modeling astroph…
An effective model for the tidal disruption of satellites undergoing minor mergers with axisymmetric primaries
Ludovica Varisco, Massimo Dotti, Matteo Bonetti +2
According to the hierarchical formation paradigm, galaxies form through mergers of smaller entities and massive black holes (MBHs), if lurking at their centers, migrate to the nucl…
Disc instability and bar formation: view from the IllustrisTNG simulations
David Izquierdo-Villalba, Silvia Bonoli, Yetli Rosas-Guevara +7
We make use of z = 0 samples of strongly barred and unbarred disc galaxies from the TNG100 and TNG50 cosmological hydrodynamical simulations to assess the performance of the simple…
Observing the inspiral of coalescing massive black hole binaries with LISA in the era of Multi-Messenger Astrophysics
Alberto Mangiagli, Antoine Klein, Matteo Bonetti +6
Massive black hole binaries (MBHBs) of merging in low redshift galaxies () are sufficiently loud to be detected weeks b…
The LISA Astrophysics MBHcatalogues Project: A comparison of predictions of simulated massive black hole binaries
David Izquierdo-Villalba, Melanie Habouzit, Matteo Bonetti +67
In the hierarchical paradigm of galaxy formation, central massive black holes (MBHs) are expected to coalesce after the merger of their host galaxies. One of the main goals of the…
The evolution of the barred galaxy population in the TNG50 simulation
Yetli Rosas-Guevara, Silvia Bonoli, Massimo Dotti +8
We use the magnetic-hydrodynamical simulation TNG50 to study the evolution of barred massive disc galaxies. Massive spiral galaxies are already present as early as , and bar f…
Massive black hole merger rates: the effect of kpc separation wandering and supernova feedback
Enrico Barausse, Irina Dvorkin, Michael Tremmel +2
We revisit the predictions for the merger rate of massive black hole binaries detectable by the Laser Interferometer Space Antenna (LISA) and their background signal for pulsar-tim…
Massive Black Holes in Galactic Nuclei
David Izquierdo-Villalba, Alessandro Lupi, John Regan +2
Massive black holes are key inhabitants of the nuclei of galaxies. Moreover, their astrophysical relevance has gained significant traction in recent years, thanks especially to the…
The fate of EMRI-IMRI pairs in AGN accretion disks: hydrodynamic and three body simulations
Peng Peng, Alessia Franchini, Matteo Bonetti +2
Extreme-mass-ratio inspirals (EMRIs) and intermediate-mass-ratio inspirals (IMRIs) are important gravitational wave (GW) sources for the Laser Interferometer Space Antenna (LISA).…
Resolving the nano-Hz gravitational wave sky: the detectability of eccentric binaries with PTA experiments
Riccardo J. Truant, David Izquierdo-Villalba, Alberto Sesana +2
Pulsar Timing Array (PTA) collaborations reported evidence of a nano-Hz stochastic gravitational wave background (sGWB) compatible with an adiabatically inspiraling population of m…
Post-Newtonian evolution of massive black hole triplets in galactic nuclei -- III. A robust lower limit to the nHz stochastic background of gravitational waves
Matteo Bonetti, Alberto Sesana, Enrico Barausse +1
Inspiraling massive black-hole binaries (MBHBs) forming in the aftermath of galaxy mergers are expected to be the loudest gravitational-wave (GW) sources relevant for pulsar-timing…
Massive Black Hole Binaries from the TNG50-3 Simulation: I. Coalescence and LISA Detection Rates
Kunyang Li, Tamara BogdanoviÄ, David R. Ballantyne +1
We evaluate the cosmological coalescence and detection rates for massive black hole (MBH) binaries targeted by the gravitational wave observatory Laser Interferometer Space Antenna…
Two-body relaxation in the EMRI-TDE disk model for Quasi Periodic Eruptions
Chiara Maria Allievi, Luca Broggi, Alberto Sesana +1
Quasi Periodic Eruptions (QPEs) are luminous bursts of soft X-rays recently discovered in galactic nuclei. They repeat on timescales of hours to weeks, superimposed to an otherwise…
Black holes, gravitational waves and fundamental physics: a roadmap
Leor Barack, Vitor Cardoso, Samaya Nissanke +203
The grand challenges of contemporary fundamental physics---dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem-…
Dynamical evolution of massive perturbers in realistic multi-component galaxy models I: implementation and validation
Matteo Bonetti, Elisa Bortolas, Alessandro Lupi +1
Galaxies are self-gravitating structures composed by several components encompassing spherical, axial and triaxial symmetry. Although real systems feature heterogeneous components…
Dynamical friction-driven orbital circularisation in rotating discs: a semi-analytical description
Matteo Bonetti, Elisa Bortolas, Alessandro Lupi +2
We present and validate a novel semi-analytical approach to study the effect of dynamical friction on the orbits of massive perturbers in rotating stellar discs. We find that dynam…
Lighting up the nano-hertz gravitational wave sky: opportunities and challenges of multimessenger astronomy with PTA experiments
Riccardo J. Truant, David Izquierdo-Villalba, Alberto Sesana +4
Pulsar Timing Array (PTA) experiments have the potential to unveil continuous gravitational wave (CGW) signals from individual massive black hole binaries (MBHBs). Detecting them i…
Massive Black Hole Binaries from the TNG50-3 Simulation: II. Using Dual AGNs to Predict the Rate of Black Hole Mergers
Kunyang Li, Tamara BogdanoviÄ, David R. Ballantyne +1
Dual active galaxy nuclei (dAGNs) trace the population of post-merger galaxies and are the precursors to massive black hole (MBH) mergers, an important source of gravitational wave…
Unveiling early black hole growth with multi-frequency gravitational wave observations
Rosa Valiante, Monica Colpi, Raffaella Schneider +7
Third Generation ground based Gravitational Wave Interferometers, like the Einstein Telescope (ET), Cosmic Explorer (CE), and the Laser Interferometer Space Antenna (LISA) will det…
The lifetime of binary black holes in Sérsic galaxy models
Nadia Biava, Monica Colpi, Pedro R. Capelo +5
In the local universe, black holes of M are hosted in galaxies displaying a variety of stellar profiles and morphologies. These black holes are the anticipated…
Post-Newtonian constraints on Lorentz-violating gravity theories with a MOND phenomenology
Matteo Bonetti, Enrico Barausse
We study the post-Newtonian expansion of a class of Lorentz-violating gravity theories that reduce to khronometric theory (i.e. the infrared limit of Horava gravity) in high-accele…
Eccentricity evolution of massive black hole binaries from formation to coalescence
Alessia Gualandris, Fazeel Mahmood Khan, Elisa Bortolas +4
Coalescing supermassive black hole binaries (BHBs) are expected to be the loudest sources of gravitational waves (GWs) in the Universe. Detection rates for ground or space-based de…
Quasi-periodic eruptions from impacts between the secondary and a rigidly precessing accretion disc in an extreme mass-ratio inspiral system
Alessia Franchini, Matteo Bonetti, Alessandro Lupi +7
X-ray quasi-periodic eruptions (QPEs) represent a recently discovered example of extreme X-ray variability associated with supermassive black holes. These are high-amplitude bursts…
Prospects for EMRI/MBH parameter estimation using Quasi-Periodic Eruption timings: short-timescale analysis
Joheen Chakraborty, Lisa V. Drummond, Matteo Bonetti +11
Quasi-Periodic Eruptions (QPEs) are luminous, recurring X-ray outbursts from galactic nuclei, with timescales of hours to days. While their origin remains uncertain, leading models…
Extreme Mass Ratio Inspirals triggered by Massive Black Hole Binaries: from Relativistic Dynamics to Cosmological Rates
Giovanni Mazzolari, Matteo Bonetti, Alberto Sesana +4
Extreme mass ratio inspirals (EMRIs) are compact binary systems characterized by a mass-ratio in the range and represent primary gravitational wave (GW)…
Neutron star binary orbits in their host potential: effect on early r-process enrichment
Matteo Bonetti, Albino Perego, Massimo Dotti +1
Coalescing neutron star binary (NSB) systems are primary candidates for -process enrichment of galaxies. The recent detection of -process elements in ultra-faint dwarf (UFD)…
The Effect of Mission Duration on LISA Science Objectives
Pau Amaro Seoane, Manuel Arca Sedda, Stanislav Babak +38
The science objectives of the LISA mission have been defined under the implicit assumption of a 4 yr continuous data stream. Based on the performance of LISA Pathfinder, it is now…
Unveiling the Gravitational Universe at μ-Hz Frequencies
Alberto Sesana, Natalia Korsakova, Manuel Arca Sedda +31
We propose a space-based interferometer surveying the gravitational wave (GW) sky in the milli-Hz to -Hz frequency range. By the 2040s', the -Hz frequency band, bracketed i…
Morphological decomposition of TNG50 galaxies: methodology and catalogue
Tommaso Zana, Alessandro Lupi, Matteo Bonetti +6
We present MORDOR (MORphological DecOmposeR, a new algorithm for structural decomposition of simulated galaxies based on stellar kinematics. The code measures the properties of up…
Extreme mass ratio inspirals and tidal disruption events in nuclear clusters. I. Time dependent rates
Luca Broggi, Elisa Bortolas, Matteo Bonetti +2
In this paper we develop a computationally efficient, two-population, time-dependent Fokker-Plank approach in the two dimensions of energy and angular momentum to study the rates o…
Fragments of harmony amid apparent chaos: a closer look at the X-ray quasi-periodic eruptions of the galaxy RX J1301.9+2747
Margherita Giustini, Giovanni Miniutti, Riccardo Arcodia +17
Quasi-periodic eruptions (QPEs) are an extreme X-ray variability phenomenon associated with low-mass supermassive black holes. First discovered in the nucleus of the galaxy GSN 069…
Emission signatures from sub-pc Post-Newtonian binaries embedded in circumbinary discs
Alessia Franchini, Matteo Bonetti, Alessandro Lupi +1
We study the dynamical evolution of quasi-circular equal mass massive black hole binaries embedded in circumbinary discs from separations of down to the merger,…
Post-Newtonian evolution of massive black hole triplets in galactic nuclei -- II. Survey of the parameter space
Matteo Bonetti, Francesco Haardt, Alberto Sesana +1
Massive black hole binaries (MBHBs) are expected to form at the centre of merging galaxies during the hierarchical assembly of the cosmic structure, and are expected to be the loud…
Post-Newtonian Evolution of Massive Black Hole Triplets in Galactic Nuclei: I. Numerical Implementation and Tests
Matteo Bonetti, Francesco Haardt, Alberto Sesana +1
Massive black-hole binaries (MBHBs) are thought to be the main source of gravitational waves (GWs) in the low-frequency domain surveyed by ongoing and forthcoming Pulsar Timing Arr…
Testing EMRI models for Quasi-Periodic Eruptions with 3.5 years of monitoring eRO-QPE1
Joheen Chakraborty, Riccardo Arcodia, Erin Kara +13
Quasi-Periodic Eruptions (QPEs) are luminous X-ray outbursts recurring on hour timescales, observed from the nuclei of a growing handful of nearby low-mass galaxies. Their physical…
Global torques and stochasticity as the drivers of massive black hole pairing in the young Universe
Elisa Bortolas, Pedro R. Capelo, Tommaso Zana +5
The forthcoming Laser Interferometer Space Antenna (LISA) will probe the population of coalescing massive black hole (MBH) binaries up to the onset of structure formation. Here we…
Gravitational Waves from the Cosmic Dawn: Tracing Cosmic Black Hole Binaries with ET, LGWA and LISA
Nazanin Davari, Rosa Valiante, Alessandro Trinca +8
Next generation detectors, such as LISA, LGWA, and ET will, for the first time, probe the high redshift Universe, offering unique insight into the birth, growth, and dynamics of th…