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
Electrical and Computer Engineering,
Pratt School of Engineering
Recent Publications
Initial Characterization of Stellar Photometry of Roman Images from the OpenUniverse Simulations
Journal Article The Astronomical Journal · March 2, 2026 Abstract 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 ... Full text CiteWHALES. The Weighing Halos Accurately, Locally, and Efficiently with Supernovae Survey: Overview and Initial Data Release
Journal Article The Astrophysical Journal Letters · February 10, 2026 Abstract We present an overview of the Weighing Halos Accurately, Locally, and Efficiently with Supernovae (WHALES) survey, the first to discover and measure Type Ia supernovae (SNe Ia ... Full text CiteThe Complete Sample of Available SNe Ia Luminosity Calibrations from the TRGB Observed with either HST or JWST
Journal Article The Astrophysical Journal · January 20, 2026 Abstract Distance ladders, which calibrate the luminosity of Type Ia supernovae (SNe Ia), currently provide the strongest constraints on the local value of 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, Training & Certifications
Johns Hopkins University ·
2013
Ph.D.
Massachusetts Institute of Technology ·
2007
B.S.