334 citations · 4.3k across the 88 of their papers we have counts for
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The Impact of High-Mass Clusters on the Binary Black Hole Merger Rate over Cosmic Time
Aidan Mai, Kyle Kremer, Fulya Kıroğlu
We present a cosmological calculation of the binary black hole merger rate from dense star clusters, using a () model grid spanning the…
Red vs. Blue: How metallicity shapes black hole dynamics and mergers in dense star clusters
Saloni Agrawal, Kyle Kremer, Michael Zevin +6
Dense star clusters are a well-established environment for the formation of gravitational wave sources through dynamical interactions. Recent LIGO-Virgo-KAGRA (LVK) events such as…
Black hole mergers from dense star clusters with realistic binary populations
Christopher E. O'Connor, Kyle Kremer, Saloni Agrawal +5
We present a suite of 24 full-lifetime simulations of dense star clusters with the Cluster Monte Carlo (CMC) code, featuring updated input physics and a realistic distribution of i…
An analytical approach to binary populations in globular clusters
Christopher E. O'Connor, Kyle Kremer, Frederic A. Rasio
Globular clusters (GCs) display much lower binary fractions than found among main-sequence stars in the solar neighborhood. The physical cause of this difference is debatable: does…
Shadows of the Colossus: Hierarchical Black Hole Mergers in a 10-million-body Globular Cluster Simulation
Aidan Mai, Kyle Kremer, Fulya Kıroğlu
The LIGO/Virgo/Kagra (LVK) Collaboration has detected numerous binary black hole mergers with properties that challenge standard binary evolution scenarios, such as component masse…
Hierarchical Triples vs. Globular Clusters: Binary black hole merger eccentricity distributions compete and evolve with redshift
Andris Dorozsmai, Isobel M. Romero-Shaw, Aditya Vijaykumar +5
The formation mechanisms of merging binary black holes (BBHs) observed by the LIGO-Virgo-KAGRA collaboration remain uncertain. Detectable eccentricity provides a powerful diagnosti…
IMBH Progenitors from Stellar Collisions in Dense Star Clusters
Elena González Prieto, Newlin C. Weatherford, Giacomo Fragione +2
Very massive stars (VMSs) formed via a sequence of stellar collisions in dense star clusters have been proposed as the progenitors of massive black hole seeds. VMSs could indeed co…
Dynamical formation of Gaia BH3 in the progenitor globular cluster of the ED-2 stream
Daniel Marín Pina, Sara Rastello, Mark Gieles +3
Context. The star-black hole (S-BH) binary known as Gaia BH3, discovered by the Gaia Collaboration is chemically and kinematically associated with the metal-poor ED-2 stream in the…
Stellar Escape from Globular Clusters. II. Clusters May Eat Their Own Tails
Newlin C. Weatherford, Frederic A. Rasio, Sourav Chatterjee +3
We apply for the first time the Monte Carlo star cluster modeling method to study tidal tail and stellar stream formation from globular clusters, assuming a circular orbit in a smo…
An elusive dark central mass in the globular cluster M4
Eduardo Vitral, Mattia Libralato, Kyle Kremer +4
Recent studies of nearby globular clusters have discovered excess dark mass in their cores, apparently in an extended distribution, and simulations indicate that this mass is compo…
Stellar Escape from Globular Clusters. I. Escape Mechanisms and Properties at Ejection
Newlin C. Weatherford, Fulya Kıroğlu, Giacomo Fragione +3
The theory of stellar escape from globular clusters (GCs) dates back nearly a century, especially the gradual evaporation of GCs via two-body relaxation coupled with external tides…
Growing Black Holes through Successive Mergers in Galactic Nuclei: I. Methods and First Results
Dany Atallah, Alessandro A. Trani, Kyle Kremer +4
We present a novel, few-body computational framework designed to shed light on the likelihood of forming intermediate-mass (IM) and supermassive (SM) black holes (BHs) in nuclear s…
Hyper-Eddington Black Hole Growth in Star-Forming Molecular Clouds and Galactic Nuclei: Can It Happen?
Yanlong Shi, Kyle Kremer, Michael Y. Grudić +2
Formation of supermassive black holes (BHs) remains a theoretical challenge. In many models, especially beginning from stellar relic "seeds," this requires sustained super-Eddingto…
Stellar graveyards: Clustering of compact objects in globular clusters NGC 3201 and NGC 6397
Eduardo Vitral, Kyle Kremer, Mattia Libralato +2
We analyse Gaia EDR3 and re-calibrated HST proper motion data from the core-collapsed and non core-collapsed globular clusters NGC 6397 and NGC 3201, respectively, with the Bayesia…
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…
Modeling Dense Star Clusters in the Milky Way and Beyond with the Cluster Monte Carlo Code
Carl L. Rodriguez, Newlin C. Weatherford, Scott C. Coughlin +10
We describe the public release of the Cluster Monte Carlo Code (CMC) a parallel, star-by-star -body code for modeling dense star clusters. CMC treats collisional stellar dynamic…
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…
The Supersonic Project: SIGOs, a Proposed Progenitor to Globular Clusters, and their Connections to Gravitational Wave Anisotropies
William Lake, Smadar Naoz, Yeou S. Chiou +4
Supersonically Induced Gas Objects (SIGOs), are structures with little to no dark matter component predicted to exist in regions of the Universe with large relative velocities betw…
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…
Matching Globular Cluster Models to Observations
Nicholas Z. Rui, Kyle Kremer, Newlin C. Weatherford +4
As ancient, gravitationally bound stellar populations, globular clusters are abundant, vibrant laboratories characterized by high frequencies of dynamical interactions coupled to c…
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…
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…
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…
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…