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About

Eva-Maria Mueller is a leading cosmologist whose work is central to the Dark Energy Spectroscopic Instrument (DESI), a groundbreaking project designed to map the universe and unravel the mysteries of dark energy. Her primary research focuses on large-scale structure, galaxy clustering, and the precise measurement of cosmic distances. Mueller’s most significant contribution lies in addressing a critical challenge for DESI: correcting for the selection biases introduced by the instrument’s 5,000 optical fibers. Her highly cited 2024 paper, "Overview of the Fiber System for the Dark Energy Spectroscopic Instrument," with 57 citations, provides a foundational overview of this revolutionary system. She further advanced the field with her 2025 work on producing alternate realizations of fiber assignment, a technique essential for unbiased clustering measurements in both data and simulations. This work, with 25 citations, ensures that the resulting 40 million galaxy spectra can be used to accurately probe the universe’s expansion history. Mueller’s methodological innovations are vital for transforming raw observational data into robust cosmological constraints, cementing her role as a key figure in the quest to understand dark energy.