334 citations · 4.3k across the 88 of their papers we have counts for
91 papers
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…
Discovery of over a thousand variable stars in Terzan 5 and Liller 1 with JWST
Kevin B. Burdge, Ilaria Caiazzo, Malina M. Desai +18
The Bulge Fossil Fragments Terzan 5 and Liller 1 host some of the densest stellar environments in the Galaxy, yet their variable star populations have remained largely unexplored d…
Using Machine Learning to Model Stellar Collisions in our Galactic Center
Tristan C. Sand, Sanaea C. Rose, Elena González Prieto +8
Direct collisions in the inner pc of the Galactic center can alter the orbits and properties of stars. The outcome of a collision depends on a number of parameters, including the m…
A Framework for Linking Pre- and Post-Common Envelope Binary Properties with Star Clusters: The First Demonstration with a Massive White Dwarf+M Dwarf Binary in Alessi 12
Steffani M. Grondin, Maria R. Drout, Jason Nordhaus +12
Common envelope (CE) evolution is a critical phase in the lives of binary stars, producing close binaries that are progenitors of type Ia supernovae and gravitational wave sources.…
Formation of rotating supergiants via stellar mergers in dense clusters: Implications for black hole natal spins
Ishaan Satish, Kyle Kremer, Fulya Kıroğlu +2
We investigate how massive stellar mergers in young star clusters imprint on black hole spin distributions and the broader implications for gravitational wave sources. The central…
Formation of Black Hole-White Dwarf X-ray Binaries in Globular Clusters
William Y. W. Yang, Kyle Kremer, James C. Lombardi +1
Globular clusters are host to significant populations of dynamically-active stellar remnants that connect to a variety of astrophysical sources. Using simulations performed with th…
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…
The diverse outcomes of binary white dwarf mergers and connections to Galactic LISA sources
Kyle Kremer, Katelyn Breivik, Claire S. Ye
In the coming decade, the millihertz gravitational wave observatory LISA will provide the best constraints yet on the tens of thousands of close white dwarf binaries in the Milky W…
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…
Discovery of a double white dwarf in the Galactic globular cluster NGC 6397
Fabian Göttgens, Marilyn Latour, Ulrich Heber +4
Binaries in the cores of globular clusters are known to prevent the gravitational collapse of the cluster, and simulations predict that the core of NGC 6397 contains a large number…
Machine Learning Methods for Stellar Collisions. I. Predicting Outcomes of SPH Simulations
Elena González Prieto, James C. Lombardi, Sanaea C. Rose +7
Stellar collisions can occur frequently in dense cluster environments, and play a crucial role in producing exotic phenomena from blue stragglers in globular clusters to high-energ…
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…
Beyond Hierarchical Mergers: Accretion-Driven Origins of Massive, Highly Spinning Black Holes in Dense Star Clusters
Fulya Kıroğlu, Kyle Kremer, Frederic A. Rasio
GW231123, the most massive binary black hole (BBH) merger detected by LIGO/Virgo/KAGRA, highlights the need to understand the origins of massive, high-spin stellar black holes (BHs…
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…
Mass Distribution of Binary Black Hole Mergers from Young and Old Dense Star Clusters
Claire S. Ye, Maya Fishbach, Kyle Kremer +1
Dense star clusters are thought to contribute significantly to the merger rates of stellar-mass binary black holes (BBHs) detected by the LIGO-Virgo-KAGRA collaboration. We combine…
Spin-Orbit Alignment in Merging Binary Black Holes Following Collisions with Massive Stars
Fulya Kıroğlu, James C. Lombardi, Kyle Kremer +2
Merging binary black holes (BBHs) formed dynamically in dense star clusters are expected to have uncorrelated spin--orbit orientations since they are assembled through many random…
Formation of Stripped Stars From Stellar Collisions in Galactic Nuclei
C. Gibson, F. Kıroğlu, J. C. Lombardi +7
Tidal disruption events (TDEs) are an important way to probe the properties of stellar populations surrounding supermassive black holes. Observed spectra of several TDEs, such as A…
Black Hole Accretion and Spin-up Through Stellar Collisions in Dense Star Clusters
Fulya Kıroğlu, Kyle Kremer, Sylvia Biscoveanu +2
Dynamical interactions in dense star clusters could significantly influence the properties of black holes, leaving imprints on their gravitational-wave signatures. While previous s…
Can slow pulsars in Milky Way globular clusters form via partial recycling?
Kyle Kremer, Claire S. Ye, Craig O. Heinke +3
Alongside the population of several hundred radio millisecond pulsars currently known in Milky Way globular clusters, a subset of six slowly spinning pulsars (spin periods $0.3-4\,…
Lower-mass-gap Black Holes in Dense Star Clusters
Claire S. Ye, Kyle Kremer, Scott M. Ransom +1
The existence of compact stellar remnants in the mass range has long been debated. This so-called lower mass gap was initially suggested by the lack of low-mass X-…
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…
Spin Doctors: How to diagnose a hierarchical merger origin
Ethan Payne, Kyle Kremer, Michael Zevin
Gravitational-wave observations provide the unique opportunity of studying black hole formation channels and histories -- but only if we can identify their origin. One such formati…