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1 results

  • Neutron Star Kicks Affected by Standing Accretion Shock Instability for Core-Collapse Supernovae

  • Wakana Iwakami Nakano, Kei Kotake , Naofumi Ohnishi , Shoichi Yamada, Keisuke Sawada
  • Journal:
    Proceedings of the International Astronomical Union / Volume 7 / Issue S279 / April 2011
    Published online by Cambridge University Press:
    05 September 2012, pp. 337-338
    Print publication:
    April 2011
    • Article
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  • We investigate a proto-neutron star kick velocity estimated from kinetic momentum of a flow around the proto-neutron star after the standing accretion shock instability grows. In this study, ten different types of random perturbations are imposed on the initial flow for each neutrino luminosity. We found that the kick velocities of proto-neutron star are widely distributed from 40 km s−1 to 180 km s−1 when the shock wave reaches 2000 km away from the center of the star. The average value of kick velocity is 115 km s−1, whose value is smaller than the observational ones. The kick velocities do not depend on the neutrino luminosity.