Johanna Nagy

Johanna Nagy

Assistant Professor of Physics
PhD, Case Western Reserve University
BS, Stanford University
research interests:
  • Cosmology
  • Cosmic Microwave Background
  • Instrumentation
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    contact info:

    mailing address:

    • Washington University
    • MSC 1105-109-02
    • One Brookings Drive
    • St. Louis, MO 63130-4899
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    Nagy's research focuses on experimental cosmology.  She probes the evolution and composition of the Universe by building microwave telescopes and analyzing the resulting data.

    Precision measurements of the Cosmic Microwave Background (CMB) radiation have revolutionized our understanding of the evolution and composition of the Universe, but there is still much that we can learn from it.  Emitted just a few hundred thousand years after the Big Bang, the CMB is shaped by the structure and contents of the Universe as it travels to our instruments and also carries record of events that occurred before it was formed. 

    Nagy's lab designs and builds instruments to enable more precise measurements of the CMB with a combination of balloon-borne and ground-based telescopes, including SPIDER and CMB-S4.  Together these experiments probe topics including the physics of inflation, the nature of dark energy, and the properties of fundamental particles.  In the lab, her group works on many different aspects of instrumentation including low temperature detectors, optics, calibration, and data analysis.  

    Before joining Washington University, Nagy was a Dunlap Fellow with the Dunlap Institute for Astronomy & Astrophysics at the University of Toronto.

    recent courses

    Physical Measurement Laboratory (Physics 322)

    A variety of classical and modern experiments in physics, including five experiments in nuclear radiation. Use of computers in experiment control, data acquisition, and data analysis. Development of skills in writing lab notebooks and formal reports and giving short oral presentations on experiments.