The influence of inelastic neutrino interactions with light clusters on core-collapse supernova simulations

Shun Furusawa, Hiroki Nagakura, Kohsuke Sumiyoshi, Shoichi Yamada

Research output: Contribution to journalArticle

Abstract

We perform numerical experiments to investigate the influence of inelastic neutrino reactions with light clusters in hot nuclear matter on core-collapse supernova simulations. These interactions have been neglected in most hydrodynamical supernova simulations. The neutrino absorptions and inelastic interactions with deuterons, tritons, helions and alpha particles are taken into account in the hydrodynamical simulations in addition to the ordinary charged- current interactions with nucleons. Axial symmetry is assumed but no equatorial symmetry is imposed. The time evolutions of shock waves are calculated with a simple light-bulb approximation for the neutrino transport and a multi-nuclei equation of state. We show that the heating rates of deuterons reach as high as ∼ 10% of those of nucleons around the bottom of the gain region. On the other hand, alpha particles heat the matter near the shock wave, which is important when the shock wave expands and density and temperature of matter become low. It is also found that the models with heating by light clusters have different evolutions from those without it in non-linear evolution phase. The matter in the gain region has various densities and temperatures and there appear regions that are locally rich in deuterons and alpha particles. These results indicate that the inelastic reactions of light clusters, especially deuterons, should be incorporated in the simulations of core-collapse supernovae.

Original languageEnglish
Article number012059
JournalJournal of Physics: Conference Series
Volume569
Issue number1
DOIs
Publication statusPublished - 2014
Externally publishedYes

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deuterons
supernovae
neutrinos
alpha particles
shock waves
nucleons
simulation
interactions
heating
symmetry
luminaires
equations of state
heat
nuclei
temperature
approximation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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The influence of inelastic neutrino interactions with light clusters on core-collapse supernova simulations. / Furusawa, Shun; Nagakura, Hiroki; Sumiyoshi, Kohsuke; Yamada, Shoichi.

In: Journal of Physics: Conference Series, Vol. 569, No. 1, 012059, 2014.

Research output: Contribution to journalArticle

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