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arXiv · 1903.11584

The origin of Galactic cosmic rays: challenges to the standard paradigm

Stefano Gabici·Carmelo Evoli·Daniele Gaggero·Paolo Lipari·Philipp Mertsch·Elena Orlando·Andrew Strong·Andrea Vittino
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Abstract

A critical review of the standard paradigm for the origin of Galactic cosmic rays is presented. Recent measurements of local and far-away cosmic rays reveal unexpected behaviours, which challenge the commonly accepted scenario. These recent findings are discussed, together with long-standing open issues. Despite the progress made thanks to ever-improving observational techniques and theoretical investigations, at present our understanding of the origin and of the behaviour of cosmic rays remains incomplete. We believe it is still unclear whether a modification of the standard paradigm, or rather a radical change of the paradigm itself is needed in order to interpret all the available data on cosmic rays within a self-consistent scenario.

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Stefano Gabici, Carmelo Evoli, Daniele Gaggero, Paolo Lipari, Philipp Mertsch, Elena Orlando, Andrew Strong, Andrea Vittino. 2019-03-27. The origin of Galactic cosmic rays: challenges to the standard paradigm. https://doi.org/10.1142/s0218271819300222

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