Organizers: Damiano Caprioli, Anatoly Spitkovsky, Lorenzo Sironi, Benoit Cerutti, Eve Ostriker, James Stone

The Earth is relentlessly bombarded by ultra-relativistic particles produced in cosmic accelerators. These cosmic-ray sources also show prominent non-thermal emission, offering us a direct insight into the physical processes able to produce the most-energetic particles in the Universe. The aim of this program is to bring together a selected pool of scientists, with mixed observational and theoretical skills, to illustrate the wealth of new data provided by the present generation of experiments, and to discuss successes and issues of current theoretical models of particle acceleration and transport. Moreover, special attention will be given to the still poorly-understood role of cosmic rays in galactic dynamics.

This program will be by invitation only.