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About

Shadab Alam is a leading cosmologist whose research focuses on unraveling the nature of dark energy through large-scale structure and spectroscopic surveys. A key contributor to the Dark Energy Spectroscopic Instrument (DESI), Alam has been instrumental in both the technical design and scientific exploitation of this Stage-IV experiment. He co-authored the foundational "DESI Experiment Part II: Instrument Design" (2016, 234 citations), which details the robotically-actuated fiber positioners enabling the survey's unprecedented scale. His impact extends to groundbreaking results, including the "First detection of the BAO signal from early DESI data" (2023, 37 citations), where he helped analyze 261,291 luminous red galaxies to deliver the earliest baryon acoustic oscillation measurements from the instrument. Alam also contributed to the comprehensive "Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument" (2022, 10 citations), which outlines DESI's five-year mission to map 40 million galaxies and quasars. Through his work on instrument design and data analysis, Alam is helping to measure cosmic distances and probe the expansion history of the universe, advancing our understanding of dark energy.