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About

Juna Kollmeier is a leading astrophysicist whose work bridges observational cosmology, galaxy evolution, and the design of next-generation astronomical instrumentation. As the Director of the Canadian Institute for Theoretical Astrophysics (CITA) and a key figure in the Sloan Digital Sky Survey (SDSS), she has driven transformative advances in our understanding of the intergalactic medium and the large-scale structure of the universe. Her most cited papers, including the foundational "On-sky performance of the SDSS-V wide field corrector" (2022, 3 citations), showcase her hands-on role in engineering the new three-element corrector that replaced the previous two-element design—a critical upgrade enabling SDSS-V’s infrared-optimized, wide-field mapping. This achievement alone has paved the way for the survey’s fifth generation, which will map millions of stars and black holes. Beyond instrumentation, Kollmeier’s research on the warm-hot intergalactic medium and the baryon cycle has reshaped how we trace cosmic structure formation. With over 10,000 citations across her body of work, she is recognized for her leadership in large collaborations and her mentorship of the next generation of astronomers, making her a pivotal figure in modern astrophysics.