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
Comparing the DES-SN5YR and Pantheon+ SN cosmology analyses: Investigation based on ‘Evolving Dark Energy or Supernovae systematics’?
Journal Article Monthly Notices of the Royal Astronomical Society · July 7, 2025 AbstractRecent cosmological analyses measuring distances of Type Ia Supernovae (SNe Ia) and Baryon Acoustic Oscillations (BAO) have all given similar hints at time-evolving dark energy. To examine whether un ... Full text CiteCalibrating the absolute magnitude of type Ia supernovae in nearby galaxies using [O ii] and implications for H0
Journal Article Monthly Notices of the Royal Astronomical Society · April 1, 2025 The present state of cosmology is facing a crisis where there is a fundamental disagreement in measurements of the Hubble constant (), with significant tension between the early and late Universe methods. Type Ia supernovae (SNe Ia) are important to measur ... Full text CiteReduction of the type Ia supernova host galaxy step in the outer regions of galaxies
Journal Article Monthly Notices of the Royal Astronomical Society · March 1, 2025 Using 1533 type Ia supernovae (SNe Ia) from the 5-yr sample of the Dark Energy Survey (DES), we investigate the relationship between the projected galactocentric separation of the SNe and their host galaxies and their light curves and standardization. We s ... 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 - 2028Big Data and the Biggest Tension in Cosmology
ResearchPrincipal Investigator · Awarded by David & Lucile Packard Foundation · 2019 - 2027SN cosmology with the next generation of experiments
FellowshipPrincipal Investigator · Awarded by National Aeronautics and Space Administration · 2023 - 2026View All Grants
Education, Training & Certifications
Johns Hopkins University ·
2013
Ph.D.
Massachusetts Institute of Technology ·
2007
B.S.