Publications (20)
Signatures of a subpopulation of hierarchical mergers in the GWTC-4 gravitational-wave dataset
Cailin Plunkett, Thomas Callister, Michael Zevin +1
Repeated black-hole mergers in dense stellar clusters are a plausible mechanism to populate the predicted gap in black hole masses due to the pair-instability supernova process. Th…
The US Program in Ground-Based Gravitational Wave Science: Contribution from the LIGO Laboratory
David Reitze, Rich Abbott, Carl Adams +181
Recent gravitational-wave observations from the LIGO and Virgo observatories have brought a sense of great excitement to scientists and citizens the world over. Since September 201…
No evidence that the binary black hole mass distribution evolves with redshift
Max Lalleman, Kevin Turbang, Thomas Callister +1
The mass distribution of merging binary black holes is generically predicted to evolve with redshift, reflecting systematic changes in their astrophysical environment, stellar prog…
Joint constraints on the field-cluster mixing fraction, common envelope efficiency, and globular cluster radii from a population of binary hole mergers via deep learning
Kaze W. K. Wong, Katelyn Breivik, Kyle Kremer +1
The recent release of the second Gravitational-Wave Transient Catalog (GWTC-2) has increased significantly the number of known GW events, enabling unprecedented constraints on form…
Shouts and Murmurs: Combining Individual Gravitational-Wave Sources with the Stochastic Background to Measure the History of Binary Black Hole Mergers
Thomas Callister, Maya Fishbach, Daniel Holz +1
One of the goals of gravitational-wave astronomy is to quantify the evolution of the compact binary merger rate with redshift. The redshift distribution of black hole mergers would…
The Stochastic Siren: Astrophysical Gravitational-Wave Background Measurements of the Hubble Constant
Bryce Cousins, Kristen Schumacher, Adrian Ka-Wai Chung +4
We report the first measurement of the Hubble constant using the stochastic gravitational-wave background arising from binary black hole mergers. This astrophysical backgroun…