158 citations · 847 across the 28 of their papers we have counts for
29 papers
Shaping binary black hole merger efficiency with gravitational wave observations
Michele Bosi, Lumen Boco, Stefano Torniamenti +5
Gravitational wave (GW) astronomy offers unprecedented insights into binary black hole (BBH) coalescence. However, many of the key quantities involved remain inaccessible to direct…
Breaking binary formation mechanism degeneracies with gravitational wave clustering
Nicola Bellomo, Michele Bosi, Sarah Libanore +4
Thanks to the almost 400 gravitational wave events detected, we are currently able to grasp the fundamental features of black hole mass, spin, and distance distributions. However,…
Pebbles to Gems: Intermediate-mass black holes in the first star clusters
Benedetta Mestichelli, Manuel Arca Sedda, Marta Volonteri +9
The rapid assembly of supermassive black holes (SMBHs) observed at requires efficient seeding mechanisms in the early Universe. Population III (Pop. III) star clusters…
Intermediate-mass black hole seeding in galactic nuclei from star cluster migration
Stefano Torniamenti, Nils Hoyer, Nadine Neumayer +2
Nuclear star clusters are one of the most favorable sites to host hierarchical black hole (BH) mergers, potentially bridging the gap from stellar-mass to massive BHs. However, thei…
Investigating the formation channel of GW231123: Population III stars or hierarchical mergers?
Federico Angeloni, Konstantinos Kritos, Raffaella Schneider +5
The gravitational wave event GW231123, with component black hole masses lying within or above the pair-instability mass gap, poses a significant challenge to current stellar evolut…
Milky Way Globular Clusters: Nurseries for Dynamically-Formed Binary Black Holes
Federico Angeloni, Konstantinos Kritos, Raffaella Schneider +4
We present a novel self-consistent theoretical framework to characterize the formation, evolution, and merger sites of dynamically-formed black hole binaries, with a focus on expla…
Optically thick winds of very massive stars suppress intermediate-mass black hole formation
Stefano Torniamenti, Michela Mapelli, Lumen Boco +3
Intermediate-mass black holes (IMBHs) are the link between stellar-mass and supermassive black holes. Gravitational waves have started unveiling a population of IMBHs in the $\sim…
Metal-poor single Wolf-Rayet stars: The interplay of optically thick winds and rotation
Lumen Boco, Michela Mapelli, Andreas A. C. Sander +7
The Small Magellanic Cloud (SMC) hosts 12 known Wolf-Rayet (WR) stars, seven of which are apparently single. Their formation is a challenge for current stellar evolution models bec…
Impact of stellar winds on the pair-instability supernova rate
Filippo Simonato, Stefano Torniamenti, Michela Mapelli +4
Very massive stars (VMSs, 100 M) play a crucial role in several astrophysical processes. At low metallicity, they might collapse directly into black ho…
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…
A machine learning framework to generate star cluster realisations
George P. Prodan, Mario Pasquato, Giuliano Iorio +4
Context. Computational astronomy has reached the stage where running a gravitational N-body simulation of a stellar system, such as a Milky Way star cluster, is computationally fea…
Binary black hole mergers from Population III star clusters
Benedetta Mestichelli, Michela Mapelli, Stefano Torniamenti +5
Binary black holes (BBHs) born from the evolution of Population III (Pop. III) stars are one of the main high-redshift targets for next-generation ground-based gravitational-wave (…
The boring history of Gaia BH3 from isolated binary evolution
Giuliano Iorio, Stefano Torniamenti, Michela Mapelli +15
Gaia BH3 is the first observed dormant black hole (BH) with a mass of M and represents the first confirmation that such massive BHs are associated with metal-…
Hierarchical binary black hole mergers in globular clusters: mass function and evolution with redshift
Stefano Torniamenti, Michela Mapelli, Carole Périgois +4
Hierarchical black hole (BH) mergers are one of the most straightforward mechanisms to produce BHs inside and above the pair-instability mass gap. Here, we investigate the impact o…
Impact of gas hardening on the population properties of hierarchical black hole mergers in AGN disks
M. Paola Vaccaro, Michela Mapelli, Carole Périgois +5
Hierarchical black hole (BH) mergers in active galactic nuclei (AGNs) are unique among formation channels of binary black holes (BBHs) because they are likely associated with elect…
Dynamical formation of BH1 in a young star cluster
Sara Rastello, Giuliano Iorio, Michela Mapelli +5
BH1, the first quiescent black hole (BH) detected from data, poses a challenge to most binary evolution models: its current mass ratio is , and its orbi…
Stellar-mass black holes in the Hyades star cluster?
Stefano Torniamenti, Mark Gieles, Zephyr Penoyre +3
Astrophysical models of binary-black hole mergers in the Universe require a significant fraction of stellar-mass black holes (BHs) to receive negligible natal kicks to explain the…
Eccentric black hole mergers via three-body interactions in young, globular, and nuclear star clusters
Marco Dall'Amico, Michela Mapelli, Stefano Torniamenti +1
Eccentric mergers are a signature of the dynamical formation channel of binary black holes (BBHs) in dense stellar environments and hierarchical triple systems. Here, we investigat…
A novel generative method for star clusters from hydro-dynamical simulations
Stefano Torniamenti
Most stars form in clumpy and sub-structured clusters. These properties also emerge in hydro-dynamical simulations of star-forming clouds, which provide a way to generate realistic…
Formation of black holes in the pair-instability mass gap: Hydrodynamical simulations of a head-on massive star collision
Alessandro Ballone, Guglielmo Costa, Michela Mapelli +3
The detection of the binary black hole merger GW190521, with primary black hole mass , proved the existence of black holes in the theoretically pr…
Dynamics of binary black holes in young star clusters: the impact of cluster mass and long-term evolution
Stefano Torniamenti, Sara Rastello, Michela Mapelli +3
Dynamical interactions in dense star clusters are considered one of the most effective formation channels of binary black holes (BBHs). Here, we present direct body simulations…
Dynamics of binary black holes in low-mass young star clusters
Sara Rastello, Michela Mapelli, Ugo N. di Carlo +5
Young star clusters are dynamically active stellar systems and are a common birthplace for massive stars. Low-mass star clusters ( M) are more numerous than…
Intermediate mass black holes from stellar mergers in young star clusters
Ugo N. Di Carlo, Michela Mapelli, Mario Pasquato +8
Intermediate mass black holes (IMBHs) in the mass range bridge the gap between stellar black holes (BHs) and supermassive BHs. Here, we investigate…
The impact of binaries on the evolution of star clusters from turbulent molecular clouds
Stefano Torniamenti, Alessandro Ballone, Michela Mapelli +5
Most of massive stars form in binary or higher-order systems in clumpy, sub-structured clusters. In the very first phases of their life, these stars are expected to interact with t…