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Stephanie Tonnesen is an astrophysicist whose research centers on galaxy evolution, with a particular focus on the role of ram pressure stripping in shaping galaxies as they move through the intracluster medium. Her major contributions include pioneering simulations that reveal how gas is stripped from galaxies, triggering starbursts and quenching star formation, and she has helped establish the critical link between environment and galaxy transformation. Her most-cited work, "Exploring Broadband GRB Behavior during γ‐Ray Emission" (2007, 63 citations), demonstrates her early versatility in high-energy astrophysics, using the robotic ROTSE-III telescope network to capture prompt optical emission from gamma-ray bursts GRB 051109A and GRB 051111. This study provided continuous, high-signal-to-noise coverage from the prompt phase onward, offering rare insights into the early behavior of these explosive events. Tonnesen’s work has been widely influential, with her papers collectively amassing over 1,500 citations, and she is recognized for her innovative use of hydrodynamical simulations to bridge theory and observation. Her achievements include leading major simulation projects and contributing to our understanding of how galaxies evolve in dense environments, making her a key figure in modern extragalactic astrophysics.