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Photograph of Johannes Ulf Lange

Johannes Ulf Lange Assistant Professor Physics

Contact
Johannes Ulf Lange
CAS | Physics
Don Myers Technology and Innovation Building 206E
Degrees
PhD, Astronomy, Yale University
MSc, Physics, Heidelberg University
BSc, Physics, Free University of Berlin

Bio
Johannes Lange is an astrophysicist interested in galaxies, cosmology, and machine learning. His work focuses on analyzing large astronomical data sets to extract fundamental insights into our Universe: What are the properties of dark energy and dark matter? Does general relativity hold on cosmological scales? What is the relationship between galaxies and dark matter halos? He's a member of the Dark Energy Spectroscopic Instrument (DESI) collaboration and also works with data from other large-scale galaxy surveys like the Dark Energy Survey, the Hyper Suprime-Cam survey, and the Kilo-Degree Survey.

Before coming to Â鶹ÊÓƵ in 2024, he completed his bachelor’s degree at the Free University of Berlin and a master’s degree from the University of Heidelberg. He completed his Ph.D. under the supervision of Frank van den Bosch at Yale University. Finally, during his postdoctoral career, he was a Cosmology Fellow appointed jointly by the University of California, Santa Cruz and Stanford University before being a Leinweber Fellow at the Leinweber Institute for Theoretical Physics at the University of Michigan.
See Also
For the Media
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Teaching

Fall 2024

  • PHYS-331 Modern Physics

Spring 2025

  • PHYS-230 Chngng Views of Universe

  • PHYS-230 Chngng Views of Universe