Closing in on the sources of Galactic and extragalactic cosmic rays

2008/09/10 by F. Halzen, Halzen, Francis
Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Neutrino Physics Research

paper · pdf · doi:10.48550/arxiv.0809.1874

openalex publication_date 2008/09/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We speculate that a new generation of particle astrophysics instrumentation will reveal the enigmatic sources of cosmic rays prior to the one hundredth anniversary of their discovery by Hess in 1912. While only a "smoking gun'' is missing for the case that the galactic component of the cosmic ray spectrum originates in supernova remnants, deciphering the origin of the extragalactic component is still at a level of reading tea leaves.

Citations

• ORIGIN OF COSMIC RAYS
• H.E.S.S. Galactic Plane Survey unveils a Milagro Hotspot

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