214 citations · 3.9k across the 98 of their papers we have counts for
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Black hole-neutron star mergers are unlikely multi-messenger sources
Giacomo Fragione
The promise by the LIGO/Virgo/Kagra (LVK) collaboration to detect black hole--neutron star (BH--NS) mergers via gravitational wave (GW) emission has recently been fulfilled with th…
Gravitational Microlensing Rates in Milky Way Globular Clusters
Fulya Kıroğlu, Newlin C. Weatherford, Kyle Kremer +3
Many recent observational and theoretical studies suggest that globular clusters (GCs) host compact object populations large enough to play dominant roles in their overall dynamica…
Compact Object Modeling in the Globular Cluster 47 Tucanae
Claire S. Ye, Kyle Kremer, Carl L. Rodriguez +5
The globular cluster 47~Tucanae (47~Tuc) is one of the most massive star clusters in the Milky Way and is exceptionally rich in exotic stellar populations. For several decades it h…
Hunting intermediate-mass black holes with LISA binary radial velocity measurements
Vladimir Strokov, Giacomo Fragione, Kaze W. K. Wong +2
Despite their potential role as massive seeds for quasars, in dwarf galaxy feedback, and in tidal disruption events, the observational evidence for intermediate-mass black holes (I…
Impact of natal kicks on merger rates and spin-orbit misalignments of black hole -- neutron star mergers
Giacomo Fragione, Abraham Loeb, Frederic A. Rasio
The long wait for the detection of merging black hole -- neutron star (BH--NS) binaries is finally over with the announcement by the LIGO/Virgo/Kagra collaboration of GW200105 and…
Repeated mergers, mass-gap black holes, and formation of intermediate-mass black holes in nuclear star clusters
Giacomo Fragione, Bence Kocsis, Frederic A. Rasio +1
Current theoretical models predict a mass gap with a dearth of stellar black holes (BHs) between roughly and , while, above the range accessible through…
White Dwarf Subsystems in Core-Collapsed Globular Clusters
Kyle Kremer, Nicholas Z. Rui, Newlin C. Weatherford +5
Numerical and observational evidence suggests that massive white dwarfs dominate the innermost regions of core-collapsed globular clusters by both number and total mass. Using NGC…
Micro Tidal Disruption Events in Active Galactic Nuclei
Y. Yang, I. Bartos, G. Fragione +5
Active galactic nuclei (AGNs) can act as black hole assembly lines, funneling some of the stellar-mass black holes from the vicinity of the galactic center into the inner plane of…
On the Mass Ratio Distribution of Black Hole Mergers in Triple Systems
Miguel A. S. Martinez, Carl L. Rodriguez, Giacomo Fragione
Observations have shown that the majority of massive stars, progenitors of black holes (BHs), have on average more than one stellar companion. In triple systems, wide inner binarie…
No Black Holes in NGC 6397
Nicholas Z. Rui, Newlin Weatherford, Kyle Kremer +5
Recently, \citet{vitral2021does} detected a central concentration of dark objects in the core-collapsed globular cluster NGC 6397, which could be interpreted as a subcluster of ste…
Constraining neutron star radii in black hole-neutron star mergers from their electromagnetic counterparts
Giacomo Fragione, Abraham Loeb
Mergers of black hole (BH) and neutron star (NS) binaries are of interest since the emission of gravitational waves (GWs) can be followed by an electromagnetic (EM) counterpart, wh…
Binary black hole mergers from young massive and open clusters: comparison to GWTC-2 gravitational wave data
Giacomo Fragione, Sambaran Banerjee
Several astrophysical scenarios have been proposed to explain the origin of the population of binary black hole (BBH) mergers detected in gravitational waves (GWs) by the LIGO/Virg…
First and second-generation black hole and neutron star mergers in 2+2 quadruples: population statistics
Adrian S. Hamers, Giacomo Fragione, Patrick Neunteufel +1
Recent detections of gravitational waves from mergers of neutron stars (NSs) and black holes (BHs) in the low and high-end mass gap regimes pose a puzzle to standard stellar and bi…
The Observed Rate of Binary Black Hole Mergers can be Entirely Explained by Globular Clusters
Carl L. Rodriguez, Kyle Kremer, Sourav Chatterjee +5
Since the first signal in 2015, the gravitational-wave detections of merging binary black holes (BBHs) by the LIGO and Virgo collaborations (LVC) have completely transformed our un…
Intermediate-mass Black Holes from High Massive-star Binary Fractions in Young Star Clusters
Elena González, Kyle Kremer, Sourav Chatterjee +5
Black holes formed in dense star clusters, where dynamical interactions are frequent, may have fundamentally different properties than those formed through isolated stellar evoluti…
Black Hole Mergers from Star Clusters with Top-Heavy Initial Mass Functions
Newlin C. Weatherford, Giacomo Fragione, Kyle Kremer +4
Recent observations of globular clusters (GCs) provide evidence that the stellar initial mass function (IMF) may not be universal, suggesting specifically that the IMF grows increa…