The Mystery of Ultra High Energy Cosmic Rays

Abstract

Ultra High Energy Cosmic Rays have proved to be an enduring mystery for many decades. These include gamma rays as also charged particles. One of the mysteries is: What is the exact origin of this radiation which undoubtedly comes from beyond our galaxy. The author has been studying this problem for some times now, from the point of view of the Snyder-Sidharth dispersion relation and we report some results.