Cosmic-Ray Lithium Production at the Nova Eruption Followed by a Type Ia Supernova

Abstract

Recent measurements of cosmic-ray light nuclei by AMS-02 have shown that there is an unexpected component of cosmic-ray (CR) lithium whose spectral index is harder than that expected from the secondary production scenario. We propose the nearby Type Ia supernova following a nova eruption as the origin of lithium nuclei in the CRs. By fitting the data of CR protons, helium, and lithium fluxes provided by AMS-02 with our theoretical model we show that this scenario is consistent with the observations. The observational tests that can check our hypothesis are briefly discussed.

6 pages, 2 figures, accepted for publication in PRL

References in corpus (8)

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• Explosive lithium production in the classical nova V339 Del (Nova Delphini 2013)
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Cited by in corpus (5)

• Observation of Spectral Structures in the Flux of Cosmic-Ray Protons from 50 GeV to 60 TeV with the Calorimetric Electron Telescope on the International Space Station
• The importance of Fe fragmentation for LiBeB analyses: Is a Li primary source needed to explain AMS-02 data?
• Can the Production Cross-Section Uncertainties Explain the Cosmic Fluorine Anomaly?
• Evidence of fresh cosmic ray in galactic plane based on DAMPE measurement of B/C and B/O ratios
• Origin of Spectral Hardening of Secondary Cosmic-Ray Nuclei