The Local Bubble in the interstellar medium and the origin of the low energy cosmic rays

Abstract

An analysis of the energy spectra of cosmic rays and particularly the precise data from the AMS-02 experiment support the view about the important role of the Local Bubble in the nearby interstellar medium. It is suggested that the bulk of cosmic rays below about 200 GV of rigidity (momentum/charge ratio) comes from the modest number of supernova remnants in the Local Bubble which appear to have occurred some $10^6$ years ago and contributed to its formation. At higher rigidities the contribution from a 'Local Source', a single supernova remnant generated some $10^5$ years ago seems to dominate up to, at least 1000 GV.

arXiv comment5 pages, accepted for publication in 'Advances in Space Research'

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Cited by in corpus (4)

• From cosmic explosions to terrestrial fires?
• Muon Radiation Dose and Marine Megafaunal Extinction at the end-Pliocene Supernova
• Paleo-Detectors for Galactic Supernova Neutrinos
• Evidence for GeV Cosmic Rays from White Dwarfs in the Local Cosmic Ray Spectra and in the Gamma-ray Emissivity of the Inner Galaxy