Overview
Use observational tools to measure the expansion history of the universe. Trying to answer big questions like 'what is dark energy?'.
Current Appointments & Affiliations
Associate Professor of Physics
·
2023 - Present
Physics,
Trinity College of Arts & Sciences
Associate Professor in the Department of Electrical and Computer Engineering
·
2025 - Present
Pierre R. Lamond Department of Electrical and Computer Engineering,
Pratt School of Engineering
Recent Publications
The Dark Energy Survey Supernova Program: A Reanalysis Of Cosmology Results And Evidence For Evolving Dark Energy With An Updated Type Ia Supernova Calibration
Journal Article Monthly Notices of the Royal Astronomical Society · April 14, 2026 AbstractWe present improved cosmological constraints from a re-analysis of the Dark Energy Survey (DES) 5-year sample of Type Ia supernovae (DES-SN5YR). This re-analysis includes an improved photometric c ... Full text CiteMeasuring the Distances to Asteroids from One Observatory in One Night with Upcoming All-sky Telescopes
Journal Article The Planetary Science Journal · April 1, 2026 Abstract Upcoming telescopes like the Vera Rubin Observatory and the Argus Array will image large fractions of the sky multiple times per night, yielding numerous near-Earth object (NE ... Full text CiteInitial Characterization of Stellar Photometry of Roman Images from the OpenUniverse Simulations
Journal Article Astronomical Journal · March 2, 2026 NASA’s Nancy Grace Roman Space Telescope (Roman) will provide an opportunity to study dark energy with unprecedented precision and accuracy using several techniques, including measurements of high-z Type Ia Supernovae (SNe Ia; z ≲ 3.0) via the High-Latitud ... Full text CiteRecent Grants
A Roman Project Infrastructure Team to Support Cosmological Measurements with Type Ia Supernovae
ResearchPrincipal Investigator · Awarded by National Aeronautics and Space Administration · 2023 - 2028Research in High Energy Physics at Duke University
ResearchCo Investigator · Awarded by Department of Energy · 2013 - 2028Big Data and the Biggest Tension in Cosmology
ResearchPrincipal Investigator · Awarded by David & Lucile Packard Foundation · 2019 - 2027View All Grants
Education
Johns Hopkins University ·
2013
Ph.D.
Massachusetts Institute of Technology ·
2007
B.S.