web: https://www.uaa.alaska.edu/academics/college-of-arts-and-sciences/departments/physics-and-astronomy/faculty/rawlins.cshtml Title: "Cosmic Rays: are they light or heavy?" Abstract: With energies greater than a PeV, cosmic rays from galactic (and extra-galactic) sources are too rare to detect directly.  Instead, large ground-based detector arrays catch the secondary particles from the extensive air showers that cosmic rays produce in the atmosphere, and attempt to determine … Continue reading "CRA Seminar by Prof. Katherine Rawlins (U. Alaska)"