J. Nordhaus, T. Brandt, A. Burrows, A. Almgren
We present results from a suite of axisymmetric, core-collapse supernova
simulations in which hydrodynamic recoil from an asymmetric explosion produces
large proto-neutron star (PNS) velocities. We use the adaptive-mesh refinement
code CASTRO to self-consistently follow core-collapse, the formation of the PNS
and its subsequent acceleration. We obtain recoil velocities of up to 620 km/s
at ~1 s after bounce. These velocities are consistent with the observed
distribution of pulsar kicks and with PNS velocities obtained in other
theoretical calculations. Our PNSs are still accelerating at several hundred
km/s at the end of our calculations, suggesting that even the highest velocity
pulsars may be explained by hydrodynamic recoil in generic, core-collapse
supernovae.
View original:
http://arxiv.org/abs/1112.3342
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