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Neutrino-driven supernova explosions powered by nuclear reactions

Published online by Cambridge University Press:  05 September 2012

K. Nakamura
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo, Japan181-8588 email: nakamura.ko@nao.ac.jp
T. Takiwaki
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo, Japan181-8588 email: nakamura.ko@nao.ac.jp
K. Kotake
Affiliation:
Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo, Japan181-8588 email: nakamura.ko@nao.ac.jp Center for Computational Astrophysics, National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo, Japan181-8588
N. Nishimura
Affiliation:
Department Physik, Universität Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland GSI, Helmholtzzentrum für Schwerioneneforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
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Abstract

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We have investigated the revival of a shock wave by nuclear burning reactions at the central region of core-collapse supernovae. For this purpose, we performed hydrodynamic simulations of core collapse and bounce for 15 M progenitor model, using ZEUS-MP code in axi-symmetric coordinates. Our numerical code is equipped with a simple nuclear reaction network including 13 α nuclei form 4He to 56Ni, and accounting for energy feedback from nuclear reactions as well as neutrino heating and cooling. We found that the energy released by nuclear reactions is significantly helpful in accelerating shock waves and is able to produce energetic explosion even if the input neutrino luminosity is low.

Type
Poster Papers
Copyright
Copyright © International Astronomical Union 2012

References

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