TeV Particle Astrophysics 2017 (TeVPA 2017)

Cosmic-Ray Lithium Production at a Type Ia Supernova Following a Nova Eruption

7 Aug 2017, 17:00

15m

Macedonian Room (The Athenaeum)

Oral Cosmic rays Cosmic rays

Speaker

Dr Norita Kawanaka (Kyoto University)

Description

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 $\sim 300\mathrm{G}\mathrm{e}\mathrm{V}$, and that the spectral indices of those components are almost the same. This implies that there are some primary sources that produce 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.

Presentation materials

20170807tevpa.pdf

20170807tevpa.pdf

20170807tevpa.pptx