cv
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Basics
| Name | William D'Arcy Kenworthy |
| Label | Quantitative Researcher |
| darcy-at-darcykenworthy.com | |
| Phone | +1 (704) 497-7230 |
| Url | https://darcykenworthy.github.io |
| Summary | PhD-trained data scientist with expertise in statistical modeling, large-scale data analysis, and systematic uncertainty correction. Experience developing analytical frameworks adopted across international research collaborations. Seeking to leverage my expertise in statistical modeling towards market analysis and risk assessment. |
Work
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2022.01 - Present Postdoctoral Researcher
Oskar Klein Center, Stockholm University
Advisor: Ariel Goobar
- Worked on the Zwicky Transient Facility, release of largest-to-date sample of cosmological supernovae
- Analyzed large datasets using statistical models to extract systematic patterns and correct for measurement biases
- Developed and validated predictive models for time-series data with sub-percent precision requirements
- Collaborated with international teams on data processing pipelines and uncertainty propagation methods
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2017.01 - 2022.01 Graduate Research Assistant
Johns Hopkins University
Advisor: Adam Riess (Nobel Laureate)
- Worked on measurement of the Hubble constant and dark energy using Type Ia supernovae
- Developed SALT3 statistical modeling framework for analyzing observational time-series data
- Created methods for systematic bias identification and correction in large-scale measurement campaigns
- Implemented Bayesian statistical models for parameter estimation with highly correlated uncertainties
Education
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2017.01 - 2019.01 Baltimore, MD, USA
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2017.01 - 2022.01 Baltimore, MD, USA
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2016.01 - 2017.01 Cambridge, UK
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2013.01 - 2017.01 Cambridge, UK
Publications
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2025.01.01 ZTF SN Ia DR2: Improved SN Ia colors through expanded dimensionality with SALT3+
Astronomy & Astrophysics
Kenworthy, W. D., Goobar, A. et al., 2025, A&A, 697, 125
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2025.01.01 A Reassessment of the Pantheon+ and DES 5YR Calibration Uncertainties: Dovekie
arXiv:2506.05471
Popovic, B., Kenworthy, W. D., et al., in review
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2024.01.01 Impact of Peculiar Velocities on Measurements of H₀
Springer Series
Kenworthy, W. D., Davis, T. M., Invited book chapter
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2022.01.01 Measurements of the Hubble Constant with a Two-rung Distance Ladder: Two Out of Three Ain't Bad
The Astrophysical Journal
Kenworthy, W. D., Riess, A. et al., 2022, ApJ, 985, 83
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2021.01.01 SALT3: An Improved Type Ia Supernova Model for Measuring Cosmic Distances
The Astrophysical Journal
Kenworthy, W. D., Jones, D. O., et al., 2021, ApJ, 923, 265
Skills
| Programming | |
| Python (data analysis, photometry) | |
| Stan (statistical modeling) | |
| JAX/Equinox (high-speed computation) |
| Data Analysis | |
| Large-scale dataset processing | |
| Statistical modeling | |
| Uncertainty quantification | |
| Systematic bias correction | |
| Model validation |
| Side Projects | |
| Swift | |
| Julia | |
| ML |
| Modeling | |
| Time series analysis | |
| Bayesian statistics | |
| Simulation-based inference |
| Tooling | |
| AWS | |
| Git | |
| Mercurial |