Solar energy paper index
Origins of Cosmic Rays in the Galactic-extragalactic Transition Energy Range
One-line summary
A solar energy research paper on Origins of Cosmic Rays in the Galactic-extragalactic Transition Energy Range.
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Engineering notes will be added by the Power for Solar editorial team.
Chinese explanation / 中文解读
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Original abstract
Cosmic rays arrive at Earth with energies ranging from $10^9$ to over $10^{20}$ eV. One of the open questions in high-energy cosmic ray science concerns the origin of the highest-energy cosmic rays that can be accelerated by Galactic sources, and the transition energy beyond which only extragalactic sources can provide. Measuring the mass composition gives essential information for comparing measurements to source and propagation models, both from the abundances at the source and from the maximum attainable energy which is proportional to the particle charge (and hence its mass). The highest-energy cosmic rays from the Galaxy are found in a range of $10^{16}$ to $10^{18}$ eV which is well suited for radio detection. Building on a decade of experience in measuring cosmic rays at LOFAR, we show that SKA-Low, augmented with an array of small particle detectors, is well suited to advance the field by measuring the mass composition of cosmic rays across this energy range.
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