214 citations · 3.9k across the 98 of their papers we have counts for
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Implications of recoil kicks for black hole mergers from LIGO/Virgo catalogs
Giacomo Fragione, Abraham Loeb
The first and second Gravitational Wave Transient Catalogs by the LIGO/Virgo Collaboration include confirmed merger events from the first, second, and first half of the third…
On the Origin of GW190521-like events from repeated black hole mergers in star clusters
Giacomo Fragione, Abraham Loeb, Frederic A. Rasio
LIGO and Virgo have reported the detection of GW190521, from the merger of a binary black hole (BBH) with a total mass around M. While current stellar models limit th…
Black Hole Mergers from Hierarchical Triples in Dense Star Clusters
Miguel A. S. Martinez, Giacomo Fragione, Kyle Kremer +8
Hierarchical triples are expected to be produced by the frequent binary-mediated interactions in the cores of globular clusters. In some of these triples, the tertiary companion ca…
An upper limit on the spin of SgrA based on stellar orbits in its vicinity
Giacomo Fragione, Abraham Loeb
The spin of the massive black hole (BH) at the center of the Milky Way, SgrA, has been poorly constrained so far. We place an upper limit on the spin of SgrA based on the s…
Demographics of triple systems in dense star clusters
Giacomo Fragione, Miguel A. S. Martinez, Kyle Kremer +6
Depending on the stellar type, more than \% and of stars in the field have at least one and two stellar companions, respectively. Hierarchical systems can be a…
Calibrating the binary black hole population in nuclear star clusters through tidal disruption events
Giacomo Fragione, Rosalba Perna, Abraham Loeb
As the sensitivity of gravitational wave (GW) instruments improves and new networks start operating, hundreds of merging stellar-mass black holes (SBHs) and intermediate-mass black…
Populating the upper black hole mass gap through stellar collisions in young star clusters
Kyle Kremer, Mario Spera, Devin Becker +6
Theoretical modeling of massive stars predicts a gap in the black hole (BH) mass function above for BHs formed through single star evolution, arising from (…
Demographics of neutron stars in young massive and open clusters
Giacomo Fragione, Sambaran Banerjee
Star clusters appear to be the ideal environment for the assembly of neutron star-neutron star (NS-NS) and black hole-neutron star (BH-NS) binaries. These binaries are among the mo…
Repeated mergers and ejection of black holes within nuclear star clusters
Giacomo Fragione, Joseph Silk
Current stellar evolution models predict a dearth of black holes (BHs) with masses M and M, and intermediate-mass black holes (IMBHs; $\si…
GW190412 as a Third-Generation Black Hole Merger from a Super Star Cluster
Carl L. Rodriguez, Kyle Kremer, Michael Y. Grudić +8
We explore the possibility that GW190412, a binary black hole merger with a non-equal-mass ratio and significantly spinning primary, was formed through repeated black hole mergers…
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.…
Merging Black Holes in the Low-mass and High-mass Gaps from 2+2 Quadruple Systems
Giacomo Fragione, Abraham Loeb, Frederic A. Rasio
The origin of the black hole (BH) binary mergers observed by LIGO-Virgo is still uncertain, as are the boundaries of the stellar BH mass function. Stellar evolution models predict…
Gravitational-wave captures by intermediate-mass black holes in galactic nuclei
Giacomo Fragione, Abraham Loeb, Kyle Kremer +1
Intermediate-mass black holes (IMBHs) have not been detected beyond any reasonable doubt, despite their potential role as massive seeds for quasars and sources of tidal disruption…