Speaker
Prof.
John Belz
(University of Utah)
Description
This talk will begin with a discussion of issues related to the composition of the highest energy cosmic rays. We describe measurements of the distribution of air shower maximum, and evaluate these in the context of modern hadronic interaction models and the uncertainties associated with extrapolating low-energy cross sections to the UHECR regime. We present results of proton-air cross-section measurements at these energies. Also, Telescope Array has a rich program of affiliated experiments which we will describe. These include the TARA project's searches for the radar echoes of Extensive Air Showers, and efforts to study the connections between lightning and high-energy particles within the Earth's atmosphere.
Primary author
Prof.
John Belz
(University of Utah)
