231 citations · 1.2k across the 24 of their papers we have counts for
25 papers
Reconstructing the origin of black hole mergers using sparse astrophysical models
V. Gayathri, Giuliano Iorio, Hiromichi Tagawa +8
The astrophysical origin of binary black hole mergers discovered by LIGO and Virgo remains uncertain. Efforts to reconstruct the processes that lead to mergers typically rely on ei…
Effects of waveform systematics on inferences of neutron star population properties and the nuclear equation of state
Anjali B. Yelikar, Richard O'Shaughnessy, Daniel Wysocki +1
Gravitational waves from inspiralling neutron stars carry information about matter at extreme gravity and density. The binary neutron star (BNS) event GW170817 provided, for the fi…
Low-latency gravitational wave alert products and their performance at the time of the fourth LIGO-Virgo-KAGRA observing run
Sushant Sharma Chaudhary, Andrew Toivonen, Gaurav Waratkar +50
Multi-messenger searches for BNS and NSBH mergers are currently one of the most exciting areas of astronomy. The search for joint electromagnetic and neutrino counterparts to GWs h…
Iteratively Comparing Gravitational-Wave Observations to the Evolution of Massive Stellar Binaries
Vera Delfavero, Richard O'Shaughnessy, Krzysztof Belczynski +2
Gravitational-wave observations have the capability to strongly differentiate between different assumptions for how binary compact objects form. In this work, we show how to carefu…
Gravitational wave source populations: Disentangling an AGN component
V. Gayathri, Daniel Wysocki, Y. Yang +4
The astrophysical origin of the over 90 compact binary mergers discovered by the LIGO and Virgo gravitational wave observatories is an open question. While the unusual mass and spi…
Expanding RIFT: Improving performance for GW parameter inference
J. Wofford, A. Yelikar, H. Gallagher +10
The Rapid Iterative FiTting (RIFT) parameter inference algorithm provides a framework for efficient, highly-parallelized parameter inference for GW sources. In this paper, we summa…
Compressed Parametric and Non-Parametric Approximations to the Gravitational Wave Likelihood
Vera Delfavero, Richard O'Shaughnessy, Daniel Wysocki +1
Gravitational-wave observations of quasicircular compact binary mergers imply complicated posterior measurements of their parameters. Though Gaussian approximations to the pertinen…
Flexible and Fast Estimation of Binary Merger Population Distributions with Adaptive KDE
Jam Sadiq, Thomas Dent, Daniel Wysocki
The LIGO Scientific, Virgo and KAGRA Collaborations recently released the third gravitational wave transient catalog or GWTC-3, significantly expanding the number of gravitational…
Normal Approximate Likelihoods to Gravitational Wave Events
Vera Delfavero, Richard O'Shaughnessy, Daniel Wysocki +1
Gravitational wave observations of quasicircular compact binary mergers in principle provide an arbitrarily complex likelihood over eight independent intrinsic parameters: the mass…
All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems
The LIGO Scientific Collaboration, the Virgo Collaboration, R. Abbott +1369
Rapidly spinning neutron stars are promising sources of persistent, continuous gravitational waves. Detecting such a signal would allow probing of the physical properties of matter…
A Common Origin for Low Mass Ratio Events Observed by LIGO and Virgo in the First Half of the Third Observing Run
Mohammadtaher Safarzadeh, Daniel Wysocki
In its third observing run, the LIGO/Virgo collaboration has announced a potential neutron star-black hole (NSBH) merger candidate, GW190426_152155. Together with GW190814, these t…
Inferring the neutron star equation of state simultaneously with the population of merging neutron stars
Daniel Wysocki, Richard O'Shaughnessy, Leslie Wade +1
Observations of the properties of multiple coalescing neutron stars will simultaneously provide insight into neutron star mass and spin distribution, the neutron star merger rate,…
Black Hole Coagulation: Modeling Hierarchical Mergers in Black Hole Populations
Zoheyr Doctor, Daniel Wysocki, Richard O'Shaughnessy +2
Data from the LIGO and Virgo detectors has confirmed that stellar-mass black holes can merge within a Hubble time, leaving behind massive remnant black holes. In some astrophysical…
Impact of subdominant modes on the interpretation of gravitational-wave signals from heavy binary black hole systems
Feroz H. Shaik, Jacob Lange, Scott E. Field +5
Over the past year, a handful of new gravitational wave models have been developed to include multiple harmonic modes thereby enabling for the first time fully Bayesian inference s…
Monte-Carlo simulations of black hole mergers in AGN disks: Low mergers and predictions for LIGO
B. McKernan, K. E. S. Ford, R. O'Shaughnessy +1
Accretion disks around supermassive black holes are promising sites for stellar mass black hole mergers detectable with LIGO. Here we present the results of Monte-Carlo simulations…
Accelerating parameter inference with graphics processing units
D. Wysocki, R. O'Shaughnessy, Y-L. L. Fang +1
Gravitational wave Bayesian parameter inference involves repeated comparisons of GW data to generic candidate predictions. Even with algorithmically efficient methods like RIFT or…
Response to Cusin et al's comment on arXiv:1810.13435
Alexander C. Jenkins, Mairi Sakellariadou, Tania Regimbau +3
We offer a brief response to the criticisms put forward by Cusin et al in arXiv:1811.03582 about our work arXiv:1810.13435 and arXiv:1806.01718, emphasising that none of these crit…
Anisotropies in the astrophysical gravitational-wave background: The impact of black hole distributions
Alexander C. Jenkins, Richard O'Shaughnessy, Mairi Sakellariadou +1
We use population inference to explore the impact that uncertainties in the distribution of binary black holes (BBH) have on the astrophysical gravitational-wave background (AGWB).…
Spin orientations of merging black holes formed from the evolution of stellar binaries
Davide Gerosa, Emanuele Berti, Richard O'Shaughnessy +4
We study the expected spin misalignments of merging binary black holes (BHs) formed in isolation by combining state-of-the-art population-synthesis models with efficient post-Newto…
Reconstructing phenomenological distributions of compact binaries via gravitational wave observations
Daniel Wysocki, Jacob Lange, Richard O'Shaughnessy
Gravitational wave measurements will provide insight into the population of coalescing compact binaries throughout the universe. We describe and demonstrate a flexible parametric m…
Geometry of the Large Magellanic Cloud Using Multi- wavelength Photometry of Classical Cepheids
Sukanta Deb, Chow-Choong Ngeow, Shashi M. Kanbur +3
We determine the geometrical and viewing angle parameters of the Large Magellanic Cloud (LMC) using the Leavitt law based on a sample of more than common classical Cepheids…
Inferences about the distribution, merger rate, and evolutionary processes of compact binaries from gravitational wave observations
Daniel Wysocki
We are living through the dawn of the era of gravitational wave astronomy. Our first glances through this new window upon the sky has revealed a new population of objects. Since it…
Explaining LIGO's observations via isolated binary evolution with natal kicks
D. Wysocki, D. Gerosa, R. O'Shaughnessy +5
We compare binary evolution models with different assumptions about black-hole natal kicks to the first gravitational-wave observations performed by the LIGO detectors. Our compari…
Inferences about supernova physics from gravitational-wave measurements: GW151226 spin misalignment as an indicator of strong black-hole natal kicks
Richard O'Shaughnessy, Davide Gerosa, Daniel Wysocki
The inferred parameters of the binary black hole GW151226 are consistent with nonzero spin for the most massive black hole, misaligned from the binary's orbital angular momentum. I…