Ultraviolet Suspects: Using Galaxies to Shed Light on the Early Universe

One of the universe’s last phase changes, reionization, took place within the first billion years of its cosmic history. Today, astronomers can use the ultraviolet signals from distant galaxies to investigate the "who," "when," and "how" of that critical period. In this talk, Carnegie Science Observatories postdoc Tony Pahl will present his research on the high-energy radiation leaking from galaxies, which leverages data collected with a combination of instruments, including NASA’s JWST, the Keck Observatory telescopes in Hawaii, and Carnegie's own twin Magellan telescopes at our Las Campanas Observatory in Chile.