Matter Mixing in Core-collapse Supernova Ejecta: Large Density Perturbations in the Progenitor Star?

  title={Matter Mixing in Core-collapse Supernova Ejecta: Large Density Perturbations in the Progenitor Star?},
  author={Jirong Mao and Masaomi Ono and Shigehiro Nagataki and M. Hashimoto and H. Ito and Jin Matsumoto and Maria Giovanna Dainotti and S.-H. Lee},
  journal={arXiv: High Energy Astrophysical Phenomena},
  • J. Mao, M. Ono, +5 authors S. Lee
  • Published 25 July 2015
  • Physics
  • arXiv: High Energy Astrophysical Phenomena
Matter mixing is one important topic in the study of core-collapse supernova (CCSN) explosions. In this paper, we perform two-dimensional hydrodynamic simulations to reproduce the high velocity $^{56}$Ni clumps observed in SN 1987A. This is the first time that large density perturbation is proposed in the CCSN progenitor to generate Rayleigh-Taylor (RT) instability and make the effective matter mixing. In the case of a spherical explosion, RT instability is efficient at both C+O/He and He/H… Expand
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