02/20/2024
By Joanne Gagnon-Ketchen

Physics colloquium, Wednesday, Feb. 21 at 4 p.m. in Olsen 102.

Timothy Paglione, Department of Earth and Physical Sciences, CUNY York College will give a talk on "Stacking the Gamma-ray Sky to Search for Faint Astrophysical Populations."

Abstract:
Gamma-rays probe the most energetic processes in the universe. Most gamma-rays are created by light and matter interacting with cosmic rays, particles accelerated to near light speed by supernova explosions and the pulsars they leave behind. We use over a decade of data from the Fermi Gamma-Ray Space Telescope to stack signals from all potential sources of gamma-rays including pulsars, stellar flares, galaxy clusters, interacting binaries, etc.

Bio:
Tim Paglione is Professor of Physics and Astronomy and Chair of the Dept. of Earth & Physical Sciences at CUNY York College. He also chairs CUNY Astro, the coalition of research astronomers at CUNY based at the American Museum of Natural History, and Director of AstroCom NYC, an NSF undergrad mentoring program. He is an observational astronomer working at the ends of the spectrum in radio and gamma-rays.