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Closing in on the sources of Galactic and extragalactic cosmic rays

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arxiv 0809.1874 v1 pith:FLBPL75W submitted 2008-09-10 astro-ph

Closing in on the sources of Galactic and extragalactic cosmic rays

classification astro-ph
keywords cosmiccomponentextragalacticgalacticrayssourcesanniversaryastrophysics
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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