The origin of high energy cosmic rays and the large scale structure of the universe.

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Universe: Large-Scale Structure, Cosmic Rays: High Energy, Cosmic Rays: Origin

Scientific paper

A recent theoretical proposal for the origin of cosmic rays gives quantitative predictions, which can be tested with data. Specifically, it has been suggested, that all cosmic rays can be attributed to just three source sites: 1) supernova explosions into the interstellar medium, 2) supernova explosions into a stellar wind, and 3) powerful radiogalaxies. The cosmic rays from any extragalactic source suffer from interaction with the microwave background, leading to the Greisen-Zatsepin-Kuzmin cutoff. The author discusses here possible sources, and specifically asks whether powerful radiogalaxies are suitable candidates.

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