2019/09/02 by Alan Watson, A A Watson, Watson, A A
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #Gamma-ray bursts and supernovae #astro-ph.HE #astro-ph.IM
paper · pdf · doi:10.48550/arxiv.1909.00670
12 pages 5 figure Public Lecture at International Cosmic Ray Conference Madison 2019
arxiv created 2019/09/02 · arxiv updated 2019/09/04
In his Nobel Prize lecture Victor Hess urged that different instruments, working together, should be used to solve the problem of the origin of cosmic rays. I review some of the key developments that have opened up the new fields of direct and indirect multi-messenger astronomy and that are guiding us to the solution of this riddle. I then discuss, very briefly, some of the new instruments that are shortly to come on line and give examples to show the long lead-times from conception to implementation that occur in this field. I conclude with some remarks about very ambitious future projects. The paper is not intended as a review: rather it is an attempt to set down issues discussed in the Hess Memorial Public Lecture given at the 2019 ICRC in Madison, Wisconsin and accessible at www.icrc2019.org.