Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..268..463n&link_type=abstract
Light Elements in the Universe, Proceedings of the International Astronomical Union, IAU Symposium, Volume 268, p. 463-468
Astronomy and Astrophysics
Astronomy
Neutrinos, Nuclear Reactions, Nucleosynthesis, Abundances – Supernovae: General
Scientific paper
Type Ic supernova (SN Ic) is the gravitational collapse of a massive star without H and He layers. It propels several solar masses of material to the typical velocity of 10,000 km/s, a very small fraction of the ejecta nearly to the speed of light. We investigate SNe Ic as production sites for the light elements Li, Be, and B, via the neutrino-process and spallations. As massive stars collapse, neutrinos are emitted in large numbers from the central remnants. Some of the neutrinos interact with nuclei in the exploding materials and mainly 7Li and 11B are produced. Subsequently, the ejected materials with very high energy impinge on the interstellar/circumstellar matter and spall into light elements. We find that the ν-process in the current SN Ic model produces a significant amount of 11B, consistent with observations if combined with B isotopes from the following spallation production.
Kajino Toshitaka
Nakamura Ko
Shigeyama Toshikazu
Yoshida Takashi
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