Cosmic-Ray Lithium Production in the Nova Ejecta
Abstract
Recent direct measurements of cosmic-ray (CR) light nuclei (protons, helium, and lithium) by AMS-02 have shown that the flux of each element has an unexpected hard component above ~300~GeV, and that the spectral indices of those components are almost the same (~2.5). This implies that there should be primary sources that produces CR lithium nuclei, which have been believed to be produced via spallation of heavier nuclei in the ISM (secondary origin). We propose the nearby Type Ia supernova following a nova eruption from a white dwarf as the origin of CR Li.
- Publication:
-
Supernova 1987A:30 years later - Cosmic Rays and Nuclei from Supernovae and their Aftermaths
- Pub Date:
- February 2017
- DOI:
- 10.1017/S1743921317004616
- Bibcode:
- 2017IAUS..331..254K
- Keywords:
-
- supernovae: general;
- novae;
- cataclysmic variables;
- acceleration of particles;
- supernova remnants;
- cosmic rays