Effects of Shock Instability on Spin and Kick of Proto-Neutron Star in Supernova Cores

POSTER

Abstract

We have numerically studied the standing/spherical accretion shock instability (SASI) for a core-collapse supernova. The core-collapse supernova is an explosion of a massive star in the final stage of its evolution. Although this spectacular phenomenon is a key issue for astrophysics, the explosion mechanism has not been understood perfectly. Recently, SASI has widely been noticed since it may play an important role for the explosion mechanism of a core-collapse supernova. In addition to it, the latest studies suggest that SASI may also affect on rotation and kick of a pulsar which is regarded as a neutron star formed by the supernova explosion. The origin of a pulsar spin and kick has been vigorously investigated, but it is still controversial among astrophysicists. We report on the effects of SASI on spin and kick of the proto-neutron star with the results of three-dimensional simulations.

Authors

  • Wakana Iwakami

    • Department of Aerospace Engineering, Tohoku University
    • Dept. of Aerospace engineering, Tohoku Univ.

  • Naofumi Ohnishi

    • Dept. of Aerospace engineering, Tohoku Univ.

  • Kei Kotake

    • Division of Theoretical Astronomy, National Astronomical Observatory Japan

  • Shoichi Yamada

    • Science and Engineering, Waseda Univ.

  • Keisuke Sawada

    • Dept. of Aerospace engineering, Tohoku Univ.