About Me - Zachary Gelles Zachary Gelles Research Talks Teaching & Outreach CV Zachary Gelles Physics Ph.D. student at Princeton University. Home Research Talks Teaching & Outreach CV Links Princeton, NJ Princeton University Email arXiv ADS Google Scholar ORCID GitHub About Me Welcome! I'm Zack Gelles, and I'm a rising fifth-year PhD student in the Department of Physics at Princeton University, where I am supported by an NSF graduate research fellowship. I work with Eliot Quataert and Frans Pretorius on a variety of topics related to black holes and gravitational physics. I completed my bachelor's degree in physics and mathematics at Harvard in 2022, and I will be applying to post-doctoral positions in the fall of 2026. Research Snapshot My research sits at the intersection of theory and observation, using black holes as probes of both astrophysics and classical general relativity. I have worked on topics related to black hole spin measurement, near-horizon electrodynamics, relativistic jets, extremal black holes, and gravitational critical phenomena. For more detail, see my CV or read more about my research and publications. Sitemap Follow: GitHub Feed © 2026 Zachary Gelles. Built with Jekyll. Site last updated 2026-08-08