438 citations · 5.2k across the 57 of their papers we have counts for
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Black hole binary mergers in dense star clusters: the importance of primordial binaries
Jordan Barber, Debatri Chattopadhyay, Fabio Antonini
Dense stellar clusters are expected to house the ideal conditions for binary black hole (BBH) formation, both through binary stellar evolution and through dynamical encounters. We…
Binary black hole mergers from merged stars in the Galactic field
Jakob Stegmann, Fabio Antonini, Fabian R. N. Schneider +2
The majority of massive stars are found in close binaries which: (i) are prone to merge and (ii) are accompanied by another distant tertiary star (triples). Here, we study the evol…
Formation of counter-rotating and highly eccentric massive black hole binaries in galaxy mergers
Imran Nasim, Cristobal Petrovich, Adam Nasim +2
Supermassive black hole (SMBH) binaries represent the main target for missions such as the Laser Interferometer Space Antenna and Pulsar Timing Arrays. The understanding of their d…
A supra-massive population of stellar-mass black holes in the globular cluster Palomar 5
Mark Gieles, Denis Erkal, Fabio Antonini +2
Palomar 5 is one of the sparsest star clusters in the Galactic halo and is best-known for its spectacular tidal tails, spanning over 20 degrees across the sky. With N-body simulati…
Formation of the largest galactic cores through binary scouring and gravitational wave recoil
Imran Nasim, Alessia Gualandris, Justin I. Read +3
Massive elliptical galaxies are typically observed to have central cores in their projected radial light profiles. Such cores have long been thought to form through `binary scourin…
Defeating stochasticity: coalescence timescales of massive black holes in galaxy mergers
Imran Nasim, Alessia Gualandris, Justin Read +3
The coalescence of massive black hole binaries (BHBs) in galactic mergers is the primary source of gravitational waves (GWs) at low frequencies. Current estimates of GW detection r…
Massive binary star mergers in galactic nuclei: implications for blue stragglers, binary S-stars and gravitational waves
Giacomo Fragione, Fabio Antonini
Galactic nuclei are often found to contain young stellar populations and, in most cases, a central supermassive black hole (SMBH). Most known massive stars are found in binaries or…
A hypervelocity star with a Magellanic origin
Denis Erkal, Douglas Boubert, Alessia Gualandris +2
Using proper motion measurements from Gaia DR2, we probe the origin of 26 previously known hypervelocity stars (HVSs) around the Milky Way. We find that a significant fraction of t…
Disrupted Globular Clusters and the Gamma-Ray Excess in the Galactic Centre
Giacomo Fragione, Fabio Antonini, Oleg Y. Gnedin
The Fermi Large Area Telescope has provided the most detailed view toward the Galactic Centre (GC) in high-energy gamma rays. Besides the interstellar emission and point-source con…
Binary black hole mergers from field triples: properties, rates and the impact of stellar evolution
Fabio Antonini, Silvia Toonen, Adrian S. Hamers
We consider the formation of binary black hole mergers through the evolution of field massive triple stars. In this scenario, favorable conditions for the inspiral of a black hole…
Dynamical friction and the evolution of Supermassive Black hole Binaries: the final hundred-parsec problem
Fani Dosopoulou, Fabio Antonini
The supermassive black holes originally in the nuclei of two merging galaxies will form a binary in the remnant core. The early evolution of the massive binary is driven by dynamic…
On the origins of enigmatic stellar populations in Local Group galactic nuclei
Nathan W. C. Leigh, Fabio Antonini, Nicholas C. Stone +2
We consider the origins of enigmatic stellar populations in four Local Group galactic nuclei, specifically the Milky Way, M31, M32 and M33. These are centrally concentrated blue st…
Black hole mergers and blue stragglers from hierarchical triples formed in globular clusters
Fabio Antonini, Sourav Chatterjee, Carl L. Rodriguez +4
Hierarchical triple-star systems are expected to form frequently via close binary-binary encounters in the dense cores of globular clusters. In a sufficiently inclined triple, grav…
Co-evolution of nuclear star clusters, massive black holes and their host galaxies
Fabio Antonini, Enrico Barausse, Joseph Silk
Studying how nuclear star clusters (NSCs) form and how they are related to the growth of the central massive black holes (MBHs) and their host galaxies is fundamental for our under…
The imprint of massive black-hole mergers on the correlation between nuclear clusters and their host galaxies
Fabio Antonini, Enrico Barausse, Joseph Silk
A literature compilation of nuclear star cluster (NSC) masses is used to study the correlation between global and nuclear properties. A comparison of observational data to the pred…
The final-parsec problem in the collisionless limit
Eugene Vasiliev, Fabio Antonini, David Merritt
A binary supermassive black hole loses energy via ejection of stars in a galactic nucleus, until emission of gravitational waves becomes strong enough to induce rapid coalescence.…
Henize 2-10: the ongoing formation of a nuclear star cluster around a massive black hole
Manuel Arca-Sedda, Roberto Capuzzo-Dolcetta, Fabio Antonini +1
The central region of the galaxy Henize 2-10 has a central black hole (BH) with a mass of about M. While this black hole does not appear to coincide with any…
Secular Evolution Of Binaries Near Massive Black Holes: Formation of compact binaries, merger/collision products and G2-like objects
Snezana Prodan, Fabio Antonini, Hagai B. Perets
Here we discuss the evolution of binaries around MBH in nuclear stellar clusters. We focus on their secular evolution due to the perturbation by the MBH, while simplistically accou…
On the distribution of stellar remnants around massive black holes: slow mass segregation, star cluster inspirals and correlated orbits
Fabio Antonini
We study the long term dynamical evolution of stellar mass black holes (BHs) at the Galactic center (GC) and put constraints on their number and central mass distribution. Models o…
The final-parsec problem in non-spherical galaxies revisited
Eugene Vasiliev, Fabio Antonini, David Merritt
We consider the evolution of supermassive black hole binaries at the center of spherical, axisymmetric, and triaxial galaxies, using direct N-body integrations as well as analytic…
Relativity and the evolution of the Galactic center S-star orbits
Fabio Antonini, David Merritt
We consider the orbital evolution of the S-stars, the young main-sequence stars near the supermassive black hole (SBH) at the Galactic center (GC), and put constraints on competing…
Origin and growth of nuclear star clusters around massive black holes
Fabio Antonini
The centers of stellar spheroids are often marked by the presence of nucleated central regions, called nuclear star clusters (NSCs). The origin of NSCs is still unclear. Here we in…
Secular evolution of compact binaries near massive black holes: gravitational wave sources and other exotica
Fabio Antonini, Hagai Perets
The environment near super massive black holes (SMBHs) in galactic nuclei contain a large number of stars and compact objects. A fraction of these are likely to be members of binar…
Dissipationless Formation and Evolution of the Milky Way Nuclear Star Cluster
Fabio Antonini, Roberto Capuzzo-Dolcetta, Alessandra Mastrobuono-Battisti +1
Abridged: In one widely discussed model for the formation of nuclear star clusters (NSCs), massive globular clusters spiral into the center of a galaxy and merge to form the nucleu…